sexual selection


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Related to sexual selection: natural selection

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

n
(Zoology) an evolutionary process in animals, in which selection by females of males with certain characters, such as large antlers or bright plumage, results in the preservation of these characters in the species

sex′ual selec′tion


n.
the Darwinian theory that the selection of mates is based on attractive features, as coloration or song in birds.
References in periodicals archive ?
(23) As an example of human imitation of nature's process of sexual selection, Darwin points out that, just as birds display their colorful plumes in order to attract a member of the opposite sex, women wear such bird plumes in order to ornament themselves and to appear more beautiful to men (Descent 95).
In 1871 he proposed his theory of Sexual Selection operating at two levels (1) same sex competition and (2) mate choice.
Sexual selection is a process in which differences in reproductive success are explained by females picking males based on specific traits.
Sexual selection theory helped Darwin explain many traits, especially in males, that otherwise seemed maladaptive.
Hamilton and Zuk (1982) introduced the concept of parasite-mediated sexual selection using the "good gene" theory, proposing that females preferred males with more pronounced secondary sexual characteristics because they were indicators of physically fit males possessing parasite-resistant genes.
But the new genetic evidence will do nothing to persuade those who believe that our big brains can be explained without resorting to theories of sexual selection.
"So, by ensuring greater diversity within individual offspring, this 'sexual selection' mechanism also maintains extensive variation within populations." Scientist Thorsten Reusch, of the Max Plank Institute for Limnology in Plon, Germany, believes humans use a similar technique.
Sexual selection explains the evolution of exaggerated male sexual ornaments in terms of differential reproductive success of individuals.
The tail does win females, so it evolves because of sexual selection, but why do females favor such burdens in their mates?
Despite long being the target of music-hall comedians south of the border, red hair could simply be the result of sexual selection, according to dermatology expert Prof Jonathan Rees.
I examined sexual selection arising from differential success in forming mating pairs and natural selection due to success in mating with larger, more fecund females.