ADJECTIVE
- having the body divided into successive metameres or segments, as in earthworms or lobsters
How To Use metameric In A Sentence
- The authors present a case of patient with a complex metameric vascular lesion of the thoracic spine and describe a management strategy for this entity.
- As far as we know, all metameric organisms use the same underlying genetic regulatory mechanism to produce segmented (i.e. metameric) bodies. Ancient Predator Revealed!
- The earliest metameric pattern, that of the pair rule genes, has 7 stripes that are determined one by one by the action and interaction of a particular combination of gap gene products (32, 33). Nobel Lecture The Identification Of Genes Controlling Development In Flies And Fishes
- The body divided into a distinct cephalon and metameric trunk.
- Geoffroy's principle of the unity of plan and composition to the three great metameric groups, the Annelida, Arthropoda, and Vertebrata. Form and Function A Contribution to the History of Animal Morphology
- As an evolutionary biologist, I would assert that the modification of the ancestral homeobox function (i.e. longitudinal differentiation) into the regulation of longitudinal metameric development would qualify as an example of evolutionary exaptation, which Stephen Jay Gould emphasized as one of the principle mechanisms of macroevolution. Ancient Predator Revealed!
- We also see in various organs of the rabbit, and especially in the case of the limbs and vertebral column, what is called metameric segmentation, that is, a repetition of parts, one behind the other, along the axis of the body. Text Book of Biology, Part 1: Vertebrata
- Indeed, there is: somites in metameric animals usually form sequentially from a posterior growth zone, a process found again in all three branches of the bilaterians.
- A number of tubuli, at first metamerically arranged, now appear, each opening, on the one hand, into the coelom by a ciliated mouth, the nephrostome (n.s.), and on the other into the segmental duct. Text Book of Biology, Part 1: Vertebrata
- If I were a FLID supporter, I would propose that the homeobox regulatory mechanism for body regions was a "front-loaded design element" that, once it was in place, could be modified extensively via standard evolutionary mechanisms to produce the various metameric metazoan bauplans. Ancient Predator Revealed!