[ UK /dˈɪmɔːfˌɪzəm/ ]
[ US /daɪˈmɔɹfɪzəm/ ]
  1. (biology) the existence of two forms of individual within the same animal species (independent of sex differences)
  2. (chemistry) the property of certain substances that enables them to exist in two distinct crystalline forms
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How To Use dimorphism In A Sentence

  • Because intra- and intersexual selection can affect traits either jointly or separately, differences in sexual selection can provide insight into patterns of dimorphism between species.
  • Predictions from the above hypotheses are not mutually exclusive, and associations between protandry and sexual dimorphism may be promoted by complex interactions between the suggested mechanisms acting in concert.
  • Coupled with the lack of evidence for sexual dimorphism, we conclude that the simplest explanation of the diversity of plate patterns in stegosaurs is species recognition, a function also noted by Carpenter.
  • Common yellowthroats are socially monogamous warblers that exhibit strong sexual dimorphism.
  • These variables fishers and Bayes discriminant functions to distinguish sexual dimorphism the three strains.
  • When the tests for dimorphism are now applied to these adults, it is clear that they are in fact dimorphic in just the same manner as other Jurassic ammonites.
  • However, the degree of dimorphism in some clades of mammals, including perissodactyls, does not correlate with the degree of polygyny.
  • Skuas and jaegers also display reversed size dimorphism to a similar degree to raptor species that feed on carrion, insects, reptiles, or mammals, but are less dimorphic than those that feed exclusively on birds.
  • In some species such sexual dimorphism occurs year-round and might be explained by intersexual differences in foraging, dominance or habitat use.
  • Songbirds like warblers, orioles, tanagers, grosbeaks, and sparrows are far from the only birds that display dimorphism.
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