How To Use Fertilisation In A Sentence
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Fertilization therefore results in an egg carrying a nucleus with contributions from both parents, and it was concluded that the cell nucleus must contain the physical basis of heredity.
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The low cell activity in equine species makes both in-vitro fertilization and cloning more difficult in horses than in cattle and even humans.
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Susceptibility to cold is determined by cultivar and cultural practices, especially fertilization.
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fertilization of the ovum, the matter most on his mind that morning.
THY BROTHER DEATH
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The objective was to demonstrate proper fertilization and harvesting practices to improve hay quality.
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Females ovulate only after spending several days with a male and then mate several times over several days to ensure fertilization.
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The microbicides are also effective as a form of contraception, because they act as both a spermicide and a barrier preventing fertilisation.
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In all the Archegoniate (including the majority of gymnosperms) fertilization and the first critical phases of embryogeny occur within the shelter provided by the archegonium and the adjacent gametophytic tissue.
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Cowboys & Aliens" has its own cross-fertilization.
Hollywood Frontiers: Outer Space and the Wild West
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It is important in horticulture and agriculture, because fruiting is dependent on fertilisation, which is the end result of pollination.
Pollination
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The cultural practices and fertilization practices recommended for wheat are satisfactory for triticale.
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Another statistic that's set to rise is the number of children conceived by in vitro fertilisation.
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Ocean fertilization is like the climate equivalent to liposuction.
Rebecca Anderson: Climate Science Round-Up: Ocean Fertilization (or Climate Liposuction)
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They performed in vitro fertilization (IVF) experiments with mouse sperm and ova, both within the clinostat and at regular gravity (1G), and determine that microgravity had minimal effects on fertilization.
Medgadget
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Darwin's keen analogy of the fertilization of plants by pollen renders development from without conceivable, but as there are no insects to convey gemmules to their destination, each kind of gemmule would have to be exceedingly numerous and easily attracted from amongst an inconceivable number of other gemmules.
Are the Effects of Use and Disuse Inherited? An Examination of the View Held by Spencer and Darwin
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The pollen cells are formed from mother cells by a process of cell division and subsequent setting free of the daughter cells or pollen cells by rejuvenescence, which is distinctly comparable with that of the formation of the microspores of Lycopodiaceæ, etc. The subsequent behavior of the pollen cell, its division and its fertilization of the germinal vesicle or oosphere, leave no doubt as to its analogy with the microspore of vascular cryptogams.
Scientific American Supplement, No. 531, March 6, 1886
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The gametes then fuse in a process called syngamy, or fertilization.
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Even for women who ovulate, there is no information about oocyte quality and consequent embryo quality after fertilisation.
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Modern culturing of wheat involves large land areas with intensive fertilization to achieve large yields and high protein concentrations.
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He who will carefully examine the flowers of orchids for himself will not deny the existence of the above series of gradationsfrom a mass of pollen-grains merely tied together by threads, with the stigma differing but little from that of an ordinary flower, to a highly complex pollinium, admirably adapted for transportal by insects; nor will he deny that all the gradations in the several species are admirably adapted in relation to the general structure of each flower for its fertilisation by different insects.
VII. Miscellaneous Objections to the Theory of Natural Selection
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Male fowl are more sexually active in the evening when fertilization is more likely, but females change depending on the population.
June 26th, 2007
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First, it applies to the fertilization of humans only, not other animals -- not a negligible consideration, but still a biased, that is, a homocentric one.
ProLifeBlogs
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All of which further require that the original sources _at least_ be uncorrelated, which is generally untrue for most proxies presented to date CO2 is correlated with temperature, and solar activity, as well as fertilization, etc.
Day Two at AGU « Climate Audit
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Some plans cover fertility drugs to stimulate ovulation or intrauterine insemination (IUI, often called artificial insemination) but don't cover pricier assisted reproductive technology (ART) procedures, such as in vitro fertilization.
Health insurance rules may decide whether infertility treatment is essential
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Sánchez trained tens of thousands of farmers and extension agents in soil conservation and organic fertilization.
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The large waves of migration of the modern world, along with the instant technology we've devised (television, radio, movies, the Internet), encourage verbal cross-fertilization.
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This means that each seed contains not only the embryo that resulted from cross-fertilization (called a gametic embryo), but also several
4: Multipurpose trees
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In the 1980s, the early years of the NAR, there was significant cross-fertilization between Reconstructionists and Pentecostalism.
Julie Ingersoll: C. Peter Wagner: Dominion Theology And Postmillennialism On NPR
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Since in vitro fertilization started, two decades ago, there has been an explosion of twins, triplets, quadruplets, even quintuplets.
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Immediately after fertilization, the cells of the egg divide.
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It might also have a place in other assisted reproductive techniques such as oocyte transfer and gamete intrafallopian transfer (combining eggs and sperm outside the body, then placing them in the fallopian tubes to achieve fertilization), he said.
TheHorse.com News
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The embryos of all sexually reproducing organisms develop from a single cell, formed by the fusion of a male and a female gamete at fertilization.
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In the reproductive tract, NGF could participate in fertilization mechanisms by cytoskeletal mediated activation of spermatozoa locomotion much in the same way as in neurite outgrowth, or by favoring egg implantation, via inhibition of rejection through the immune system.
Nobel Lecture The Nerve Growth Factor: Thirty-Five Years Later
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In addition, a strong staining was observed in maternal chalazal tissue shortly after fertilization, and persisted throughout seed development.
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Females deposited their eggs in clutches with the eggs arranged in rows, which meant that the order of fertilization by the different sires could be distinguished.
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For introduction of spermatid mitochondria, in vitro fertilization was carried out by microinjection of spermatids into unfertilized oocytes as described previously.
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Corn (and wheat for that matter) is a heavy nitrogen depleter and requires extensive fertilization to sustain it.
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In short, fertilization enhanced neither the build-up of biological materials nor the capture of nutrients by it.
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If a Y-chromosome combines with an X-chromosome during fertilization, a male baby will result.
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It likens it to now common reproductive technologies such as in vitro fertilization and artificial insemination.
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Before fertilization, the egg is enclosed in a protective vitelline membrane, which is embedded in a gelatinous coat.
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This structure is actually a highly vascularized extension of the cloaca which allows internal fertilization.
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Fertilization having been thus effected by fusion of the male and female pronuclei into a single (or new) nucleus, this latter body proceeds to exhibit complicated processes of karyokinesis, which, as before shown, are preliminary to nuclear division in the case of egg-cells.
Darwin, and After Darwin (Vol. 1 and 3, of 3) An Exposition of the Darwinian Theory and a Discussion of Post-Darwinian Questions
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There are many reasons for male infertility, including low sperm count, inactive or incompletely formed sperms and other factors that hamper fertilisation.
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He is a good friend of the couple and is the father of the twins the woman is carrying by in vitro fertilization.
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If fertilization has occurred, they prevent the egg from implanting into the uterus - the medical definition of pregnancy.
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To determine whether those eggs contained embryos, 4 days after the last chick was hatched, we broke the eggs still in the nest and checked for dead embryos or lack of fertilization.
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Crude protein levels range from 15 to 25 percent in the herbage and 8 to 15 percent in the roots, depending on nitrogen fertilization rate and weather conditions.
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After fertilization, gestation ensues for 65-70 days.
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One of the weaknesses in the survey is the use of the word "conception" rather than fertilization in the questionnaire.
Reuters: Press Release
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Mark Shea points out the synergy that results from the cross-fertilization of cultures:
July 6th, 2009
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An equation is established for the calculation of the increase in fetal body weight to fertilization age.
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No differences were noted in pollen germination, pollen tube growth or fertilization between experimental tests of xenogamy and geitonogamy in S. mucugensis.
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The large waves of migration of the modern world, along with the instant technology we've devised (television, radio, movies, the Internet), encourage verbal cross-fertilization.
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This time, though, they're avoiding the word "fertilization" in the amendment's language, saying that the term confused voters, who may have visualized chicken eggs.
Denver Post: News: Breaking: Local
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Once these discoveries had been made, it was no longer possible to deny that animal life begins at fertilisation.
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Gametophytic self-incompatibility is a widespread mechanism in flowering plants that prevents self-fertilization and promotes out-crossing.
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Where the tubes are irreversibly damaged and there are large, communicating hydrosalpinges, salpingectomy (laparoscopic or open) is recommended as the success of in vitro fertilisation is impaired by their presence.
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Maturation of the exocarp and edible aril The juvenile mangosteen fruit, which does not require fertilization to form (see agamospermy), first appears as pale green or almost white in the shade of the canopy.
WN.com - Business News
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Its form can vary from irregular and contorted to a near-perfect but sterile fruit. parthenocarpy, which is the formation of fruits without fertilization or the formation of seeds.
Christian Science Monitor | All Stories
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Our ability to detect doubly recombinant chromosomes depends on the genotype of the homolog after fertilization.
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The technique is called gamete-targeted lentiviral transgenesis - essentially, inserting genes into feline oocytes eggs before sperm fertilization.
Default- News - USATODAY.com
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The particular form of apomixis involves the development of a 2n embryo sac followed by fertilization of the central nuclei to form the endosperm (pseudogamy).
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Julia's pregnancy was conceived using an in vitro fertilization procedure.
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That's when cross-pollinating plants release their pollen into the air for fertilization.
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It was an enactment of a rhetorical confluence and epistemological crossfertilization between science and art.
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The leaves below the archegonial group are frequently modified in size and shape, but the chief protection is afforded by a tubular perianth, which corresponds to a coherent whorl of leaves and grows up independently of fertilization.
Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria"
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We have known for many years that Ca2+ and cAMP messengers play central roles in the preparation of sperm for fertilization in the physiologic sequence that is collectively called 'capacitation'
PLoS ONE Alerts: New Articles
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In almost every order we find some plants which have become thus reduced or degraded for wind or self-fertilisation, as Poterium and Sanguisorba among the Rosaceae; while this has certainly been the case in the cleistogamic flowers.
Darwinism (1889)
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As part of the collaboration, Wilmut is to apply to the Human Fertilisation and Embryology Authority for permission to collect fresh unfertilised eggs from women volunteers.
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Use of recommended cultural practices, fertilization, and control of plant pests is of little practical value if the seeds do not produce healthy, vigorous plants or if an unadapted variety is selected.
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These are the new sequences, created from a hybrid of Andorian DNA as well as wholly new code intended to fill the gaps left by genetic deficiencies contained within an original gamete after fertilization.
Star Trek: Typhon Pact Paths of Disharmony
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Ron Stoddart with Nightlight Christian Adoptions, which filed the suit and helps with the adoption of human embryos that are being stored in fertilization clinics, said the case promises to be a long and involved process.
Stem Cell Research Funding Appeal: Court OK's Federal Support While Appeal Continues
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It then pollinates the seed, but the actual fertilization of the seed does not occur until the fall, usually after the seed has fallen off the tree and the fleshy seed coat has rotted away.
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We believe that is because brant are reducing the levels of forage to such a low level in all treatments that the vegetation has no ability to compensate for increased grazing even when there is additional fertilization.
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The believers apart, even our common beliefs cannot take it lying down the fact that a human life is cloned (not conceived) in vitro fertilisation which is strongly offensive to our long-cherished sentiments.
Human Cloning and Its Social Impacts
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An equation is established for the calculation of the increase in fetal body weight to fertilization age.
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Reproduction in echinoderms is typically by external fertilization; eggs and sperm are freely discharged into the water.
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One of the huge social and biological changes wrought by the invention of the oral contraceptive, the Pill, is that once and for all it divided sex from the act of fertilisation, of conceiving a baby.
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The ostium leads to the second portion of the oviduct, the ampulla, which is the duct's dilated mid-portion where fertilization usually occurs.
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While the flower is fully capable of cross-fertilization, the tree is so self-compatible that the majority of the fruits are usually self-fertilized.
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After fertilization, the egg grows into a 'planula' (which is described above as a cilia covered larvae) then finds a spot to temporarily and finishes its last stage of life as a full grown
CreationWiki - Recent changes [en]
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Climate change: Scientists doubt claims over sea 'fertilisation'
EcoEarth.Info Environment RSS Newsfeed
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in vitro fertilization
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Improperly done fertilization may actually increase undesirable weed growth and contribute to other problems.
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Adequate fertilization is an economical practice for increasing pasture production.
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It should include attempts to make numerous intergeneric crosses among cereals, employing all of the modern techniques to consummate fertilization, and propagate the hybrids.
Norman Borlaug - Nobel Lecture
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The idea had not been all that unique, just the lucky cross-fertilization of one technology with another, Stone the catalyst.
CORMORANT
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The fallopian tubes are also needed for sperm capacitation and egg fertilisation.
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A yearly mulch of quality compost is all the fertilization your grapes should need.
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The sex of the embryo is predetermined at fertilization.
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But then he steps into more uncharted -- or unbriefed -- waters: Question: And the corollary question that's emerged on Capitol Hill and elsewhere is, if it is murder, do you then shut down in vitro fertilization clinics?
July 2006
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While self-sterile plants are incapable of fertilization by self-pollination, genetically different individual plants of the same variety can be fertilized by cross-pollination (Figure 6.9).
5. How plants live and grow
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A Tribute to N. Chandraji for showing Truth - EVEN.S OF 1978 AS RELATED TO 1987 1978 Subhash Mukhopadhyay created history when he became the first physician in India (and second in the world after British physicians Patrick Steptoe and Robert Edwards) to perform the In vitro fertilization resulting in a test tube baby "Durga" (alias Kanupriya Agarwal) on October 3,
WN.com - Articles related to India expects $5 bn Canadian investment in road sector
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The primary needs are a better understanding of the agronomic requirements (including optimum fertilization) and a day-neutral cultivar which can grow during the summer months to take advantage of the rains from November through early April.
16: Oils
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In the pumpkinseed sunfish, parental care is provided exclusively by males, but some males parasitize others by sneaking fertilizations.
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The embryos, or pre-embryos, at fertility clinics are frozen at sometime between two and five days after fertilization.
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In vitro fertilization can restore fertility to women who ovulate but can not conceive because their Fallopian tubes are blocked.
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Iodophor disinfectant solutions contain iodine formulated for use on fish eggs," the USGS said, adding although some disinfection treatments reduced hatch, iodophor treatment at 90 minutes after fertilization did not alter egg hatch or fry development.
EcoWorld
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Because if the sperm count is low, what we can do is do a procedure called Ixy, which is where you pick up single sperm in a micropipette and actually inject it into the egg to get fertilization.
CNN Transcript Mar 14, 2004
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Actually, the New Kinsey Report says seven hours is the minimum from intercourse to fertilization, that being the time it take the sperm to undergo capacitation.
A Month of Writers, Day Twenty Three: Justine Larbalestier « Whatever
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In his book on orchids he documents the elaborate frills and furbelows, gimmicks and traps, that lure and exploit insect pollinators, thereby ensuring cross-fertilization.
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By using soil nutrient state system study method, balancing soil fertilization have been adopted after the soil nutrient limitation factors had been made clear.
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The term "fertilisation" could be taken to mean anything from the penetration of the egg by the sperm, to the implantation of the egg into the uterus which happens later.
Mississippi voters evenly split over controversial abortion ballot
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Shallow soil or inadequate fertilization also can cause nuts to drop.
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Fertilisations may occur over a period of a month, but the most recent foetuses have the best chance to develop.
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Thus, it is argued that pregnancy only comes within the law relating to abortion upon the implantation of the conceptus in the womb, not at the point of fertilization.
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This is where fertilisation takes place, and a zygote forms.
Times, Sunday Times
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Adequate fertilization helps the plants resist thrips, but be careful not to overfertilize.
SFGate: Top News Stories
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Soil that has been amended with either green or animal manures within six months won't need fertilization at planting time.
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The Tales were a triumph of cross-fertilisation, they had a world - wide, pansexual audience that both discovered and embraced the camp and the kitsch.
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Sperm is traditionally stored in large liquid nitrogen tanks together with a protective chemical that must be removed before fertilisation.
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During these two to three weeks after fertilization, the male will protect the nest and guard the eggs with great fierceness.
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London also will oversee laws governing abortion, human fertilization and genetics.
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After fertilization, she glues the eggs to her swimmerets (swimming legs).
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Self-fertilisation is the rule in umbelliferous species.
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Membrane fusion is a key event in many essential cell processes, such as exocytosis, endocytosis, membrane recycling, protein sorting and transport, fertilization, and cell division.
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There was one small problem – the policy was widely interpreted to mean all ocean fertilization is bad, which then prevented small scale experiments as part of IPY.
2009 December 19 | Serendipity
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He said cross-fertilisation could be stopped by making GM plants sterile.
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Immediately after fertilization, the cells of the egg divide.
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Last May, leading scientists applauded Parliament for passing the Human Fertilisation and Embryology Bill, supported by both Gordon Brown and David Cameron, that allowed the creation of animal-human "admixed" embryos for stem cell research.
Anglican Mainstream
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Mating is achieved by pseudocopulation, a process of external fertilization in which partners maintain a close physical association before their synchronous release of gametes.
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In a natural anticipation of fertilization, these rising estrogen levels stimulate the tissue that lines the inside of your uterus called the endometrium to begin growing thicker.
Getting Pregnant
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Mangosteen Scam - Maturation of the exocarp and edible aril The juvenile mangosteen fruit, which does not require fertilization to form (see agamospermy), first appears as pale green or almost white in the shade of the canopy.
WN.com - Business News
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Seeds are not produced without fertilization (absence of agamospermy).
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In other cases precautions are taken to prevent cross-fertilisation, as in the numerous cleistogamous or closed flowers.
Darwinism (1889)
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The Human Fertilisation and Embryology Authority (HFEA) gave the go-ahead to controversial plans to create "cytoplasmic" embryos, which merge a tiny bit of human DNA with eggs from animals such as cattle or rabbits.
UK to Allow Human-Animal Embryos | Impact Lab
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The researchers also found that although some of the disinfection treatments reduced hatch, iodophor treatment at 90 minutes after fertilization occurred did not alter egg hatch or fry development.
UnderwaterTimes.com News of the Underwater World
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Many plant species are capable of self-fertilization and even highly self-incompatible species may show varying levels of self-fertility.
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Sexual plant reproduction involves a reduction of the somatic chromosome number by meiosis followed by a restoration of the somatic chromosome number by fertilization.
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We've made huge advances in agricultural mechanization, in fertilization, in soil science.
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Mukhopadhyay created history when he became the first physician in India (and second in the world after British physicians Patrick Steptoe and Robert Edwards) to perform the In vitro fertilization resulting in a test tube baby "Durga" (alias Kanupriya Agarwal) on October 3,
WN.com - Articles related to Resentment in Maharashtra Congress over Anand Sharma's Rajya Sabha nomination
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A lot of ideas in science come when people come together, from cross-fertilization of ideas.
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Flowering plants have several mechanisms that have evolved to prevent self-fertilization, e.g. self-incompatibility systems, heterostyly and dichogamy.
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If fertilization occurs, progesterone supports implantation of the ovum and maintains the pregnancy.
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Is it more ethical to cultivate stem cells from embryos created during in vitro fertilization?
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Wrasses practice external fertilization in which the female's eggs are released into the water.
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By using soil nutrient state system study method, balancing soil fertilization have been adopted after the soil nutrient limitation factors had been made clear.
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Most birds don't have insertable parts, achieving fertilization by the so-called cloacal kiss.
Science News / Features, Blog Entries, Column Entries, Issues, News Items and Book Reviews
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If a female and male have sex within several days of the female's ovulation, fertilization can occur.
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He's a�physiologist at Cambridge University, and he received the prize in physiology and medicine for his work on in-vitro fertilization.
Nobel Prize For Medicine Goes To IVF Pioneer
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Thus, while attempting to ‘collect’ the egg-spots, the female ingests milt ejected near them by the male and ensures fertilization.
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The idea of the hermaphrodite who has fully functioning male and female organs and is capable of self-fertilization is a myth, though a very persistent one, which has long exercised a fascination over the human mind.
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Together, the three modes of geitonogamy make a much larger contribution to self-fertilization than autogamy.
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It has long been known that after fertilization of the egg has taken place, the formation of endosperm begins from the endosperm nucleus, and this had come to be regarded as the recommencement of the development of a prothallium after a pause following the reinvigorating union of the polar nuclei.
Encyclopaedia Britannica, 11th Edition, Volume 2, Part 1, Slice 1
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In most animals, alien or earth-type, the critical point in development is not the fertilization of the egg, but rather gastrulation.
THE BROKEN GOD
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In most animals, alien or earth-type, the critical point in development is not the fertilization of the egg, but rather gastrulation.
THE BROKEN GOD
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This nematode reproduces primarily by self-fertilization of adult hermaphrodites, although males can develop under special conditions.
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After sperm have been deposited in the mammalian female reproductive tract, they undergo a process known as capacitation which facilitates fertilization by removing certain inhibitory factors.
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Many of these researches were closely connected with the study of the events of gametogenesis and fertilization.
GENETIC CONTINUITY
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A network of zoos and aquariums specializing in new reproductive tech (in vitro fertilization, cryopreservation, embryo transfer) and hoping to return those creatures born of assisted reproduction to the wild.
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After several bouts of egg laying and fertilization, the female departs with fertilized eggs which she broods in her mouth.
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It has been known that the self - sterility of conifers results from embryo collapse after self - fertilization.
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The average length of time from fertilization until birth is about 266 days.
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However , plots receiving higher fertilization recorded higher yield of green gram after rice in sequence.
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In common with in vitro fertilisation, a gamete intrafallopian transfer cycle begins with superovulation to recruit multiple follicles and is followed by egg retrieval.
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We should expect the albuminous state of the seed to be an antecedent one to the exalbuminous condition, and the recent discoveries in fertilization tend to confirm this view.
Encyclopaedia Britannica, 11th Edition, Volume 2, Part 1, Slice 1
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These gill tissues are modified into a gill marsupium, which protects and aerates the eggs until fertilization.
Mollusca
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No additional fertilization was applied to that already present in the growing medium during the experiment.
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Flowering plants have several mechanisms that have evolved to prevent self-fertilization, e.g. self-incompatibility systems, heterostyly and dichogamy.
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It is likely that the patient became pregnant with her first or nearly first ovulation otherwise one would expect that inspissated blood in the uterus and salpinges would have made fertilization difficult.
Medlogs - Recent stories
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Reduce nitrogen fertilization, and test soil to check potassium levels.
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In the fucoid zygote, polarization events can be triggered by a range of stimuli, including unidirectional light and fertilization.
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In humans, fertilization is more likely to occur at certain times of the month.
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Whether normal oral contraceptives work as abortifacients (that is, whether they prevent implantation as well as preventing fertilization) has been a matter of some debate.
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They show that the crucial shift to self-fertilization in the cultivated plant involves but a single gene.
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The technique is called gamete-targeted lentiviral transgenesis — essentially, inserting genes into feline oocytes eggs before sperm fertilization.
Glow-in-the-dark cats against AIDS, other diseases
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The other point has to do with the matter of identical twinning, which we are told can ‘happen up to six days after fertilization.’
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Approximately four days after fertilization and after several cycles of cell division, these totipotent cells begin to specialize.
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They show that the crucial shift to self-fertilization in the cultivated plant involves but a single gene.
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After mating is complete, the female releases eggs into her marsupium where fertilization takes place.
Crustacea
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While the flower is fully capable of cross-fertilization, the tree is so self-compatible that the majority of the fruits are usually self-fertilized.
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The endosperm, a result of double fertilization in flowering plants, is a triploid tissue whose genetic composition is more complex than diploid tissue.
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Louise Brown, the first human being to be conceived by in vitro fertilization, is a healthy, happy young woman who lives with her parents in England.
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The spherically symmetrical zygote then selects and elaborates an axis, visibly breaking symmetry by producing a rhizoidal bulge at about 10 h after fertilization.
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Gametes and fertilization are at least as old as animals, with many different types of external and internal fertilization and anisogamy is almost as old.
Just when you thought it was safe to go in the water again ... - The Panda's Thumb
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Oviparity with free-swimming larvae is the most common, but direct terrestrial development and viviparity (with attendant internal fertilization) are known in toads as well.
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Since in vitro fertilization started, two decades ago, there has been an explosion of twins, triplets, quadruplets, even quintuplets.
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The "fertilisation" of the frog's eggs is effected in ordinary conditions by the presence in the water of the pond, into which the female sheds them, of microscopic sperm-filaments (often called spermatozoa, or simply "sperms") which are shed into the water at the same time by the male frog.
More Science From an Easy Chair
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As opposed to the theory that there is any absolute need for cross-fertilisation, it has been urged by Mr. Henslow and others that many self-fertilised plants are exceptionally vigorous, such as groundsel, chickweed, sow-thistle, buttercups, and other common weeds; while most plants of world-wide distribution are self-fertilised, and these have proved themselves to be best fitted to survive in the battle of life.
Darwinism (1889)
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In short, fertilization enhanced neither the build-up of biological materials nor the capture of nutrients by it.
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A preliminary observation on the double fertilization and post - fertilization development of Ypsilandra thibetica Franch.
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One reason for this may lie in the inevitable cross-fertilisation of races and cultures, of which the Strauss family provides an example.
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In this study, I use floral manipulations in conjunction with marker gene analysis to estimate the relative contributions of autogamy and geitonogamy to self fertilization.
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fertilization of the ovum, the matter most on his mind that morning.
THY BROTHER DEATH
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In most animals, alien or earth-type, the critical point in development is not the fertilization of the egg, but rather gastrulation.
THE BROKEN GOD
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The cypripediums alone possess glutinous pollen grains, and with them the peculiar mechanical construction requisite to the accomplishment of fertilisation.
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The clinic also practises pre-implantation genetic screening to scan for potential defects before fertilisation.
The Sun
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Cruger, Dr., on cleistogamic fertilisation of Epidendrum.
More Letters of Charles Darwin — Volume 2
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Figure 17.6 Key Haploid (n) Diploid (2 n) Egg (n) Zygote (2 n) Sperm (n) (released from male gametangium) Gametophyte (n) (underside) Fertilization Clusters of sporangia New sporophyte (2 n) growing out of gametophyte Mature sporophyte (independent of gametophyte)
Recently Uploaded Slideshows
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They are a common adaptation in organisms that use internal fertilization, and have arisen multiple times in a number of vertebrate and invertebrate lineages.
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If one of these other cells containing the mutation or deletion is used in a fertilization, the fetus would inherit the Jagged1 mutation.
Frequently Asked Questions About Alagille Syndrome
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In this case it appears that male sterility caused self-fertilization to fail but some days later cross-fertilization took place.
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The sexual phase of the Plasmodium life cycle is completed with the fertilization of a macrogamete by a flagellar microgamete, and the subsequent generation of sporozoites.
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These balancing acts help Agile teams achieve and sustain three conditions of self-organization [7] - autonomy, cross-fertilization, and self-transcendence - respectively.
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In normal fertilisation the formation of male and female pronuclei is an important stage just before the maternal and paternal chromosomes start to pair up in preparation for the first cell division.
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Flowers of this species are protogynous, visited by a good variety of insects, and capable of both self-and cross-fertilization.
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Scientists have identified why excessive fertilisation of soils is resulting in a loss of plant diversity.
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Together, the three modes of geitonogamy make a much larger contribution to self-fertilization than autogamy.
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The act also requires that no person should provide gametes for in vitro fertilisation, storage, or donation without first being given appropriate information about treatment.
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Bermudagrass is highly responsive to fertilization with N and can be an important and valuable cash crop.
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These data indicated that the effect of antisera to the zona pellucida would mainly block fertilization and interfere early embryo development, but exists individual differences.
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Instead, males that mate with mated females increase their fertilization success by being cannibalized.
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If so, is it autogamous (capable of self-fertilization in the absence of pollinators)?
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If, after appropriate testing, there is no evidence that conception has occurred already, she may be treated with medications that would prevent ovulation, sperm capacitation, or fertilization.
Catholic Views on Emergency Contraception and Its Role in the 2010 Massachusetts Special Election « Publius the Geek
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They all prefer acidic soil and require regular fertilization through the growing season.
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In those instances where there is potential for fertilisation and conception to occur, a variety of technologies are available to overcome infertility.
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The most simple formalisms link crop growth to fertilization regime or to time, expressed in days or in time units (cumulative degree-days) from sowing.
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It brings the artists and craftworkers together, and results in a great cross fertilisation of ideas.
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When there are two separate occurrences of fertilization during the same menstrual cycle, rather than different cycle, it is known as superfecundation.
Emaxhealth
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Mixing and matching salsa with traditional Scottish music didn't seem such a wild idea at the time as Edinburgh was bubbling with musical cross-fertilisations.
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Ultrasound picture of an ovary stimulated for in vitro fertilisation using a more aggressive regimen than used for intrauterine insemination
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Fertilization occurs in the mesenchyme and the zygotes develop into ciliated larvae.
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Forage fertilization should be based on soil test levels and realistic yield goals.
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Indeed, program sponsors and resource sponsors can also affect cross-fertilization of efforts within their domains.
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Consequently, the genetic structure of this species is likely to be shaped by rare outcrossing events among colonists, followed by generations of self-fertilization to produce recombinant inbred lineages.
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Such a mutant megagamete could participate in fertilization with wild type pollens and sometimes set aberrant seeds with twin embryos.
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Cereals, including wheat, rice and maize, are either wind pollinated, or their seed production does not require fertilization.
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Little is known of their reproductive biology, but the lack of both spermatheca in females, and cloacal glands in males, suggests external fertilization.
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It would not be reproductive cloning as fertilisation would involve only one set of gametes produced in this way and therefore a unique embryo would form.
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I have, also, reason to believe that humble-bees are indispensableto the fertilisation of the heartsease (Violatricolor), for other beesfo not visit this flower.
The Spectator's take on Darwin, 1882
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There were other misunderstandings about the potential success of in-vitro fertilisation.
Times, Sunday Times
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In asexual reproduction, eggs develop without fertilization, a process called parthenogenesis.
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The sexual phase of the Plasmodium life cycle is completed with the fertilization of a macrogamete by a flagellar microgamete, and the subsequent generation of sporozoites.
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As in most other animals, the sperm mitochondria penetrate the cell membrane of the ovum at fertilization.
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In cases where the female remates, we determine the relative fertilization success of each male.
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The effect of rootstock on wine quality is probably no greater than that of other factors such as soil, climate, fertilization, and irrigation.
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These balancing acts help Agile teams achieve and sustain three conditions of self-organization [7] - autonomy, cross-fertilization, and self-transcendence - respectively.
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It lures male codling moths on to a sticky platform (from which there is no escape) to limit fertilisation of the females and reduce the number of grubs, which feed inside developing fruits.
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The three main types of assisted conception are intrauterine insemination, in vitro fertilisation, and intracytoplasmic sperm injection.
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In the early stages after fertilization - immediately after a sperm and egg join together and begin dividing - stem cells are considered totipotent.
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Meiotic spindles form after fertilization of the worm embryo in the same cytoplasm that later supports embryonic mitosis.
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In this case it appears that male sterility caused self-fertilization to fail but some days later cross-fertilization took place.
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The ostium leads to the second portion of the oviduct, the ampulla, which is the duct's dilated mid-portion where fertilization usually occurs.
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In all its projects, livestock grants are integrated into sustainable-agriculture programs, including controlled grazing, organic fertilization, terracing, agroforestry and reforestation.
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When teaching students, I describe the processes of spermatogenesis, ovulation and fertilisation as a continuum with implantation and early pregnancy development.
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Occasionally one of these spermatozoids may be found attached to the trichogyne, and in this way fertilization is effected.
Elements of Structural and Systematic Botany For High Schools and Elementary College Courses
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Forages are generally good sources of calcium and can be variable in phosphorus according to soil type and fertilization.
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Deciding to perform fall fertilization, or deciding not to, presents risks and benefits that must be considered.
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‘Fertilization is an amphimixis,’ he exclaimed, ‘a mixing or fusing of the properties of the two parental generators.’
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Because human beings only ever have sex when fertilisation is most optimal.
Jeers. « Love | Peace | Ohana
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Extracted or ejaculated sperms are capacitated (a biochemical and structural change in the laboratory), to isolate motile and healthy sperms prior to fertilization process.
Increasing the odds of a successful Blastocyst culture In Vitro Fertilization (IVF)
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There has been evolutionary growth in the technology of in vitro fertilisation and the gamete intrafallopian transfer programme.
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To what extent, if at all, the sandwort depends upon the service of insects for its fertilization, I do not know, but it certainly has no scarcity of such visitors.
The Foot-path Way
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This leads to disomy (two copies of each chromosome) following fertilization.
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After fertilisation all the cells in the earliest stages of embryonic development are identical.
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If the question of when life begins depends on objective science, where has the scientific community confirmed that it overwhelmingly and definitively favors fertilization over implantation [or nidation]?
U.S. News
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When the pill is used, if there is any ovulation, it renders the egg unable to attach to the uterine wall - some of the same hormones come into play, but the major pregnancy hormone, Human Chorionic Gonadotropin (HCG) does not appear until implantation and fertilization begin.
The Pill kills babies!! | My[confined]Space
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Many plants, apparently physically equipped for self-fertilization, were completely self-sterile.
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For instance, the migration of the male pronucleus within the animal oocyte after fertilization, together with movements of the female pronucleus, are essential events for nuclear fusion.
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If what I have found so far and my search has not ended yet, nor will it ever likely is accurate- that life begins at fertilization both by the independent definition of life and a scientific understanding of the life cycle- then abortion must end.
An unavoidable conclusion - BatesLine
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Because self-incompatibility operates after pollination, it reduces geitonogamous self-fertilization but not geitonogamous pollination.
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Species and site characteristics often serve as a general guide to fertilization in established Christmas tree plantations.
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The development of most animals is characterized by distinctive stages, including a zygote, formed by the product of the first few division of cells following fertilization; a blastula, which is a hollow ball of cells formed by the developing zygote; and a gastrula, which is formed when the blastula folds in on itself to form a double-walled structure with an opening to the outside, the
Conservapedia - Recent changes [en]
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In oviparous animals this can include prefertilization decisions such as the production of larger eggs and the deposition of hormones, such as the steroid testosterone, into yolks.
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During pollination the female portion of the plant receives pollen from the tassel, resulting in fertilization of the ovule (kernel).
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Fertilization failure , pregnancy, and live birth rates did not differ between IVF and ICSI.
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During copulation the female transfers unfertilized eggs to the male's ventral surface, where fertilization takes place.
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Physid snails usually cross-fertilize but are capable of occasional self-fertilization.
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That a congregation of individuals belonging to one species into one community may be profitable to the species is evident; it may obviously in several ways aid in maintaining the existence of the species, for instance, by facilitating abundant and certain fertilization (especially in anemophilous plants) and maturation of seeds; in addition, the social mode of existence may confer other less-known advantages.
Introduction to the Science of Sociology
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The manurial requirements of the winged bean have not been studied in detail, but it responds favourably to nitrogen fertilisation.
Chapter 35
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Most of what goes wrong during meiosis-to-fertilization-to-mitosis results in chromosomal abnormalities, usually nondisjunction, thus providing a mechanism for aneuplodiy -- rather than an insistence that it really does happen.
WN.com - Articles related to Plants give up some deep secrets of drought resistance
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The common yellowthroat is a neotropical migratory warbler that is similar in many respects to other warblers whose patterns of extrapair fertilization have been related to breeding synchrony.
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In using the term incomplete fertilization, I mean supplying only potash, phosphoric acid and nitrogen, and possibly lime and sulphur, when the soil is denuded of several other elements.
Valere Aude Dare to Be Healthy, Or, The Light of Physical Regeneration
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Frequently, the health and vigor of trees stressed by construction activities can be improved by fertilization.
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Pregnancies are medically recognized conceptions, often defined as beginning at implantation or nidation roughly a week after fertilization.
The Population of the United States
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To trigger parthenogenesis, then, Loeb had to simulate fertilisation.
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This chalazogamic method of fertilisation has since been recognised in other flowering plants, but not, so far as we are aware, in the genus Primula.)
More Letters of Charles Darwin — Volume 2
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The pollen cells are formed from mother cells by a process of cell division and subsequent setting free of the daughter cells or pollen cells by rejuvenescence, which is distinctly comparable with that of the formation of the microspores of Lycopodiaceæ, etc. The subsequent behavior of the pollen cell, its division and its fertilization of the germinal vesicle or oosphere, leave no doubt as to its analogy with the microspore of vascular cryptogams.
Scientific American Supplement, No. 531, March 6, 1886
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And that means we are not going to excrete, which is tough news for the dung beetle as well as all of those plants that need fertilization.
Michael Ruse: Intelligent Design: Did God Create Through Law or Miracle?
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The process of fertilization or fecundation is also known as impregnation and conception.
Woman Her Sex and Love Life
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Double fertilization of egg cell and central cell initiates development of the diploid embryo and the triploid endosperm, respectively.
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A pollinator is the biotic agent (vector) that moves pollen from the male anthers of a flower to the female stigma of a flower to accomplish fertilization or '' syngamy '' of the female gamete in the ovule of the flower by the male gamete from the pollen grain.
Pollinator
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This was cantankerously an abject brachinus pastern when he disagreeable to fertilization the felafel with the bubaline monet of tonsillectomy the piffle into a cant pavilion. cheekily ardently soonest hotfoot, and when a dam valse them, no new enduringly is biannually to melanitta them in morpheus.
Rational Review
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The highest rate of B foliar fertilization resulted in leaf burn but had no other evident detrimental effect on plant growth.
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Fertilization of sugar beet and winter wheat grown on calcareous chernozem soil in Stavropol 'Province
Xml's Blinklist.com
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During in vivo development, maternal apomixis refers to the asexual formation of a seed from the maternal tissues of the ovule, avoiding the processes of meiosis and fertilization.
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It was a vast and happy intermingling of nationalities that settled down in China in 1982 and the years that followed — a tremendous and successful experiment in cross-fertilization.
THE UNPARALLELED INVASION
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An embryo can be developed from scratch, without the normal fertilisation process, using a nucleus derived from an adult cell that had already specialised (in this case, a sheep udder cell).
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He said the above words in opposition to in vitro fertilisation, not stem cell research.
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The variety grown here is well adapted to the climate, requiring less water and fertilization than modern hybrids.
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In order for that to happen, a woman has to have the right hormones in the right sequence in the right proportions to release an ovum, which needs to be fertilizable, have patent fallopian tubes to allow said fertilization to take place and with any luck transport it down to the uterus, but we’re not talking about ectopic pregancies here at the moment and have a cervix not hostile to the sperm.
More on “pro-life” and feminism
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He points out that the process of caprification, as it is called, that is, the artificial fertilisation of the cultivated fig-trees by hanging strings of wild figs among the boughs, takes place in Greece and Asia Minor in June about a month after the date of the
The Golden Bough
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There was no evidence that increased familiarity with a site or with a female increased fertilization effectiveness for a male.
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Hence the inclusion of a free industry panel discussion and an ambitious cross-fertilization of genres called "The Medium Formerly Known as Radio: The Evocative Power of Sound," a curated selection of "dramatic audio documentaries.
Life as They Show It
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Angiosperm seeds are comprised of an embryo and endosperm resulting from double fertilization of the egg cell and two polar nuclei, respectively.
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In his book on orchids he documents the elaborate frills and furbelows, gimmicks and traps, that lure and exploit insect pollinators, thereby ensuring cross-fertilization.
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Many couples who use condoms as protection realize that condoms can break as often as 3% of the time, which means that fertilization is still an option.
How Many Abortions Have You Had? « Unambiguously Ambidextrous
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Fertilisation occurs when the microgamete fuses with the macrogamete to form first a zygote, then a motile ookinete.
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However , plots receiving higher fertilization recorded higher yield of green gram after rice in sequence.
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Both sexes of this bisexual species develop from fertilized eggs but at different times following fertilization.
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We describe the maternal and paternal contributions to the diploid cell by reminding the students of the origin of a diploid cell and the process of syngamy that follows fertilization.
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‘Assisted fertilization involves microinjecting spermatozoa directly into eggs,’ says Masahito Ikawa, a postdoctoral fellow in Verma's lab and the first author on the study.
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We had to backtrack a bit to talk about gametogenesis and fertilization, but I didn't mind.
Late night variety pak
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He noted that this is an example of cross-fertilization of ideas.
Reporters Uncensored: Philanthropy and Economic Development Boosted by Global Irish Tribe
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Cross-fertilisation between cultures and religions did, of course, take place, often despite the efforts of secular and religious leaders to stop it, or to ensure that influence only flowed one way.
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This lethality was incompletely penetrant in gametes and completely penetrant postfertilization.
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In normal fertilisation the formation of male and female pronuclei is an important stage just before the maternal and paternal chromosomes start to pair up in preparation for the first cell division.
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Cruger's case here referred to is doubtless the cleistogamic fertilisation of Epidendrum, etc.
More Letters of Charles Darwin — Volume 2
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fetus: the unborn offspring in the postembryonic period, after major structures have been outlined, in humans from nine weeks after fertilization until birth.
Conservapedia - Recent changes [en]
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Flowers of this species are protogynous, visited by a good variety of insects, and capable of both self-and cross-fertilization.
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They are widely distributed from rainforests to the edges of dry and cold deserts, and they play an important role in human nutrition as well as in soil fertilization.
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In the great group of the Vandeæ, relative position of parts, friction, viscidity, elastic and hygrometric movements were all found to be nicely related to one end -- the aid of insects in fertilisation.
Life of Charles Darwin
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The cultural practices and fertilization practices recommended for wheat are satisfactory for triticale.
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If sperm undergo the acrosome reaction too early, before they contact the egg, they are incapable of fertilization.
A Baby at Last!
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But it's almost too easy to groove on the known when you can discover an Andre Derain ( "Portrait of an Unknown Man Reading a Newspaper," 1914) that almost fools you into thinking it's a Modigliani; stunning portraits by Kees Van Dongen and Felix Valloton; Maurice Denis reminding you of relationships to Puvis de Chavannes; and endless other tantalizing cross-fertilizations.
Art Inseparable From Politics
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The sulfur nutrient was significantly affected by fertilization system. The nitrogen fertilization could improve the quantities of ammonification bacteria in soil.
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Both individuals and gametes were unisexual, and self-fertilization was allowed.
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Gamogenesis: reproduction through fertilization: see agamogenesis.
Explanation of Terms Used in Entomology
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A controversial report by the National Academy of Sciences in 1992 looked at iron fertilization, among other geoengineering options.
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The former chairman of the Human Fertilisation and Embryology Authority, Ruth Deech, was made a Dame.
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We envision cross-fertilization with other kinds of assessments (business process, value chain, management, architecture, and metrics) to impact more completely the value for the organization.
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The amnion is derived from the embryo and forms as early as eight days after fertilization, when the fate of cells has yet to be determined, and serves to protect the developing fetus.
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The characteristic feature of the new view of unity was the idea of cross-fertilization, instantiated in the creation of war-boosted inter-disciplines such as cybernetics, computation, electro-acoustics, psycho-acoustics, neutronics, game theory, and biophysics.
The Unity of Science
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Confusingly, even after fertilization, the panda is capable of delayed implantation.
The Times Literary Supplement
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Experiments showed that without the protein, a sperm cannot overcome the final obstacle of fusing with the egg before fertilisation takes place.
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Thargelia, and he suggests that the hanging of the black and white figs round the necks of the two human victims, one of whom represented the men and the other the women, may have been a direct imitation of the process of caprification designed, on the principle of imitative magic, to assist the fertilisation of the fig-trees.
The Golden Bough
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the cross-fertilization of science and the creative arts
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The sperm fuses with the egg to begin the process of fertilization.
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Most anurans have external fertilization, and adopt a mating posture called amplexus to insure contact between eggs and sperm.
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Inevitably, there is a degree of cross-fertilization, anthologizing being by its very nature cannibalistic.
The Times Literary Supplement
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SELF-incompatibility is a genetic mechanism used by hermaphrodite plants to prevent self-fertilization and to promote outbreeding.
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That would mean banning certain birth-control methods such as intrauterine devices, which allow fertilization but prevent embryo attachment to the uterine wall.
'Personhood' Backers Target Abortion
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On the contrary, what is needed are serious cultural interventions able to direct the conversation not only to the creative cross-fertilisations but also to the intercultural misunderstandings, difficulties, dissensus and discord.
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The results show that early fertilization leads to the formation of apomictic embryos while fertilization at anthesis favours the formation of sexually derived embryos.
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Evidence also exists that the incidence of miscarriage may be increased in women with an intramural fibroid having in vitro fertilisation treatment.
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The linear correlation regression equation of fetal weight, CR length and fertilization age were set up.
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Its triticale progeny indicated that in the act of fertilization it had created dwarfs, introduced partial photoperiodic insensitivity, and completely overcome the sterility barrier, which had inhibited progress in triticale improvement for decades.
2 History
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Appling molybdenum fertilizer could remarkably reduce accumulation of nitrate in lettuce and you-mai vegetable no matter which pattern of fertilization, basal-dressing and top-dressing.
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At fertilization, the egg and sperm cease to exist and an new entity called a zygote comes into being.
ProWomanProLife » Two mothers, really?
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Treatments such as fertilization can increase the competitive ability of more desirable plants, preventing hawkweeds from becoming established.
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A prepared sample containing around one to two million motile sperm is required for adequate oocyte fertilisation with in vitro fertilisation.
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Reproductive Sciences at Yale, said: "When a woman undergoes in vitro fertilisation, she receives medication called Follicle Stimulating Hormone to produce more than one oocyte, which is the normal production each month.
PhysOrg.com - latest science and technology news stories
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Notes that in order to provide reliable predictions on the potential adverse impacts on marine biodiversity of activities involving ocean fertilization, further work to enhance our knowledge and modeling of ocean biogeochemical processes is required, in accordance with decision IX/16 (c) and taking into account decision IX/20 and LC-LP. 2 (2010);
First-ever congressional geoengineering report released
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Polyembryonic seeds can arise through several developmental pathways and in some cases may involve apomixis stimulated by fertilization of nearby ovules.
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These activities not only disturb bees but also interfere with normal pollen production, germination, and fertilization.
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Fertilization requires special attention when growing angelica.
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Whatever happens in those countries, the move will facilitate cross-fertilization among radical groups in Turkey.
Beware the 'Turkish Model'
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After fertilization, several achenes are produced per capitulum, and seeds are wind-dispersed.
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The simple methods belong to four principal classes: -- (1) By dichogamy -- that is, by the anthers and the stigma becoming mature or in a fit state for fertilisation at slightly different times on the same plant.
Darwinism (1889)
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Some genes have been shown to be expressed in the female gametophyte before fertilization.
