(biology) The occurrence in an animal species of two distinct types of individual. Existence in two shapes or forms; denoting a difference of crystalline form exhibited by the same substance, or a difference in form or outward appearance between individuals of the same species. The role of allometry for understanding dimorphism is developed, including methodological aspects of statistical treatment and a formal definition of Rensch’s Rule. ‘Sex chromosomes in M. violaceum were identified by the cosegregation of mating type and chromosome dimorphism and by mating-type-specific markers.’ ‘However, the degree of dimorphism in some clades of mammals, including perissodactyls, does not correlate with the degree of polygyny.’ sexual dimorphism physical or behavioral differences associated with sex. Sexual Dimorphism in Human and Mammalian Biology and Pathology. Dimorphism definition, the occurrence of two forms distinct in structure, coloration, etc., among animals of the same species. the male and the female (see SEXUAL DIMORPHISM). Define Dimorphic sexual behavior. An example is Talaromyces marneffei, a human pathogen that grows as a mold at room temperature, and as a yeast at human body temperature. Sexual dimorphism is common across the animal kingdom and may be caused by three main reasons. These result from sex-linkage of the genes … having some properties of both sexes, as in the early embryo and in some hermaphrodites. The term omits characteristics showing continuous variation (such as weight), though this has a heritable component. Synonym of Dimorphism: WordNet 2.0 dimorphism Noun1. dimorphism (countable and uncountable, plural dimorphisms) (biology) The occurrence within a plant of two distinct forms of any part. In biology, polymorphism has been given a specific meaning, being distinguishable from monomorphism (having only one form). Dimorphic fungi are fungi that can exist in the form of both mold and yeast.This is usually brought about by change in temperature and the fungi are also described as thermally dimorphic fungi. The Quarterly Review of Biology, 64 (4), 419-461. Antonyms for dimorphism. Louis, MO. from The American Heritage® Dictionary of the English Language, 5th Edition. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. Shine, R. (1989). The evolution of sexual dimorphism in animals: Hypotheses and tests. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. [32].In rats sexual differentiation of the SDN-POA has been reported to occur during the first ten days postnatally [33] due to differences in … Sexual dimorphism is manifested in dioecious plants, such as the willow and Eucom-mia, by structural differences between male and female flowers (seeds develop only on female specimens during the fruiting period). adj., adj dimor´phic, dimor´phous. Other sex-specific differences include color (most birds), size or presence of parts of the body used in struggles for dominance, such as horns, antlers, and tusks; size of the eyes (bees); possession of stings (various kinds of bees), and different thresholds for certain behaviors (aggression, infant … Dimorphism in the largest biology dictionary online. Sexual dimorphism and communication between mammals. Sexual Dimorphism Overview. Sexual dimorphism in facial shape and beardedness are salient human secondary sexual traits … For example, let's say a fungus is in …