sexual selection


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Related to sexual selection: natural selection

sex·u·al se·lec·tion

a form of natural selection in which, according to darwinian theory, the male or female is attracted by certain characteristics, form, color, behavior, etc., in the opposite sex; thus modifications of a special nature are brought about in the species.

sexual selection

n. Biology
The process in nature by which individuals with certain traits, especially secondary sex characteristics such as colorful plumage and large antlers, are chosen more often for mating and thus pass those traits on to their offspring.

sexual selection

the selection of mates on the basis of the attraction of or preference for certain traits, such as coloration or behavior patterns, so that eventually only those particular traits appear in succeeding generations. It explains the wide variety of sexual characteristics among the various species.

sex·u·al se·lec·tion

(sek'shū-ăl sĕ-lek'shŭn)
A form of natural selection in which, according to Darwin's theory, the male or female is attracted by certain characteristics, forms, colors, behaviors, and phenomena, in the opposite sex; thus, modifications of a special nature are brought about in the species.

sexual selection

the selection of a mate by female animals where, for example, the most brightly coloured is favoured, so maintaining brightly coloured males in a population. Some authorities consider that sexual selection explains the existence of SECONDARY SEXUAL CHARACTERS.
References in periodicals archive ?
Such a theory does in fact exist, based on the notion that symmetry and sexual selection are not necessarily linked.
Sexual selection has been a powerful idea and scientists keep adding new twists to it.
Heppell's main scholarly thesis, and perhaps weakest part of the book, concerns the application of Darwinian sexual selection to Iban weaving and warfare.
True, she's only talking about Darwin's theory of sexual selection, not his theory of natural selection, but the chatter on a website called "The Evangelical Outpost" suggests that such misinterpretation has already begun.
If pollen is transported between sites, then even if males and females were to be randomly distributed within a microsite, and because they are not randomly distributed among microsites, there will always be a greater variance in male reproductive success and a potential for sexual selection to occur.
Head-size dimorphism, which is common in squamates, is a trait that may be influenced by both ecological segregation as well as by sexual selection (Shine 1991).
A variety of factors, such as crypsis or brood parasitism, likely influenced the evolution of the current diversity of eggshell colors from the ancestral white shell (Kilner 2006), and a recent hypothesis suggests that sexual selection could also have played a role (Moreno and Osomo 2003).
Competition and other forms of sexual selection may be unappreciated evolutionary forces for maintaining a species' smarts, Hollis and Tadeusz Kawecki of Lausanne propose in the April 22 Proceedings of the Royal Society B.
Sexual selection under parental choice; the evolution of human mating behavior.
Sexual selection may generate dimorphisms as a consequence of intrasexual and intersexual competition whereby a reproductive advantage is gained by one sex.
According to their results, carrying feathers could be a result of sexual selection by the females as they put more energy into reproduction if they have more feathers in the nest.