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sexual selection |
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sexual selection: see selection selection. In Darwinism , the mechanism of natural selection is considered of major importance in the process of evolution . Popular formulations sometimes envisage a struggle for existence in which direct competition for mates or for various factors in the ..... Click the link for more information. . sexual selection [¦seksh·ə·wəl si′lek·shən] (evolution) A special form of natural selection responsible for the evolution of traits that promote success in competition for mates. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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There are several models of mate choice that attempt to explain female preference for certain male characteristics, most notably the extreme and costly ornaments such as the peacock's tail. But for the broadcast tree-spawning marine invertebrate, in which courtship and other complex mating behaviors that facilitate mate choice are generally non-existent, the opportunity for conspecific sperm preference and the possible mechanism has been largely ignored. Given that both male and female parrots produce the same set of five pigments, McGraw says that the colors must not be important to mate choice. |
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