sexual selection

(redirected from Sexual ornament)
Also found in: Dictionary, Encyclopedia.

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 ?
Male stalked-eyed flies with extra-long stalks, which females prefer, father more sons and have more decendants--a rare case of a sexual ornament that advertises real benefits (153: 36*).
Female attractiveness is determined by the expression of a sexual ornament - the comb - which is phenotypically and genetically correlated to the number and mass of eggs females lay," ABC Science quoted co-authors Dr.
Females may prefer males that exhibit elaborate sexual ornaments, because these can be costly to produce and maintain.