The means by which it is assumed that certain *secondary sexual characteristics, particularly of male animals, have evolved. Females often choose to mate with the male that gives the best courtship display and therefore has the brightest coloration, loudest mating call, etc.: these features would be inherited by its male offspring and would thus tend to become exaggerated down the generations. It is speculated that secondary sexual features, such as long tail feathers, indicate to the female that the male is vigorous and healthy and thus has good genes to transmit to her offspring. The theory of sexual selection was first advanced by ...
Reference Entry. 125 words.
Subjects: Biological Sciences
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