Definition of Intrasexual Selection

Intrasexual selection is defined as such a selection in which the members of a population compete with members of their own sex present in the same population. The competition between them is due to the status, tangible resources, for accessing their mates and to refine the traits, etc.


Evolution judges the success of an organism by its reproductive success. In male-male and female-female competition, the intrasexual selection tends to increase the quality and quantity of the potential mates. The process of intrasexual selection is further carried by the competition between sperms. It is not possible to release the selection pressures of intrasexual from an intersexual selection.

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