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Principles of Evolution, Ecology and Behavior - Lecture 13

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Lecture 13 - Sexual Selection

Sexual selection is a component of natural selection in which mating success is traded for survival. Natural selection is not necessarily survival of the fittest, but reproduction of the fittest. Sexual dimorphism is a product of sexual selection. In intersexual selection, a sex chooses a mate. In intrasexual selection, individuals of one sex compete among themselves for access to mates. Often honest, costly signals are used to help the sex that chooses make decisions.

Prof. Stephen C. Stearns
EEB 122: Principles of Evolution, Ecology and Behavior, Spring 2009
(Yale University: Open Yale)
http://oyc.yale.edu
Date accessed: 2009-11-18
License: Creative Commons BY-NC-SA

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