EvolutionMechanisms160-page5 - Sexual(or Mate Selection –...

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Evolutionary Mechanisms - 5 4 . Non-Random Mating and Mate Selection For the Hardy-Weinberg genetic equilibrium to work, each gamete produced by any male would have an equal chance of combining with any gamete made by any female of that species. This occurs very rarely in populations. Differential reproduction is a significant part of the Darwin-Wallace theory, and mate selection is an important part of natural selection. There are hundreds of examples of mate selection strategies, some of which will be discussed later, as well as species that use other means of non- random mating, such as those animals which are harem forming.
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Unformatted text preview: Sexual (or Mate) Selection – A special case of Selection Sexual selection involves any trait (adaptation) that gives an individual a preferential advantage in mating. Such sexual selection is very important to non-random mating. Sexual dimorphism, in which genders differ in morphology is common. Usually the male has a pattern that is used for display. Male Patterns for Display Mating behaviors, such as the competition for mates among harem animals, and the elaborate courtship displays and mate choice are well-known and popular topics for nature programs....
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This note was uploaded on 12/29/2011 for the course BIO 151 taught by Professor Edwards during the Spring '10 term at SUNY Stony Brook.

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