sexual dimorphism

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dimorphism

 [di-mor´fizm]
the quality of existing in two distinct forms. adj., adj dimor´phic, dimor´phous.
sexual dimorphism physical or behavioral differences associated with sex.
having some properties of both sexes, as in the early embryo and in some hermaphrodites.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

sex·u·al di·mor·phism

the somatic differences within species between male and female individuals that arise as a consequence of sexual maturation; inclusive of, but not restricted to, the secondary sexual characteristics.
Farlex Partner Medical Dictionary © Farlex 2012
A physical dichotomy between males and females of a particular species
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

sex·u·al di·morph·ism

(sek'shū-ăl dī-mōr'fizm)
The somatic differences within species between male and female individuals that arise as a consequence of sexual maturation, including, but not restricted to, the secondary sexual characters.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

sexual dimorphism

the presence in a population of two sexes each with a different PHENOTYPE, a classic example of a GENETIC POLYMORPHISM. The underlying mechanism varies in different organisms, but is often controlled by genes on special SEX CHROMOSOMES (see SEX DETERMINATION).
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

sex·u·al di·morph·ism

(sek'shū-ăl dī-mōr'fizm)
Somatic differences within species between male and female individuals that arise as a consequence of sexual maturation.
Medical Dictionary for the Dental Professions © Farlex 2012
References in periodicals archive ?
The presence of sexual dichromatism in teleosts (usually displayed by males, but also by females of several groups) is typically associated with an increase in conspicuousness.
2007: Sexual dichromatism in the marbled salamander, Ambystoma opacum.--Canadian Journal of Zoology 85: 1008-1013.
ceres, crests), colors of soft parts, sexual dichromatism, flight abilities, flight displays and elaborate vocalizations in columbiform species that parallel analogous traits in the original Darwin's pigeons and other domestic breeds of the Rock Rove (Table 1).
(1995) first documented sexual dichromatism in spotted sand bass as males with high contrast dark bars over a white background with a white chin, whereas females were overall darker with dark bars over a medium toned green-gray background with a yellow chin.
Plumage colour in nestling blue tits: sexual dichromatism, condition dependence and genetic effects.
Geographic variation in sexual dichromatism of Crotaphytus collaris.
ABSTRACT: Experimental manipulations of plumage coloration in captive house finches resulted in changes in their dominance interactions that support the hypothesis that sexual dichromatism in this species functions as a simple releaser signal.
Most studies of sexual dichromatism in birds involve field observations and experimental manipulations of individual species.
Both sexes are illustrated for species that exhibit sexual dichromatism, such as wrasses, parrotfishes, and triggerfishes.
Some species exhibit permanent sexual dichromatism, where different color patterns are adopted for each sex and retained for life (DeMartini 1985; Kodric-Brown 1998).
First, a comparative study relating sexual dichromatism in birds to species richness revealed larger numbers of species in taxa containing higher proportions of sexually dichromatic species (Barraclough et al.