AP BIOLOGY

Detailed explanation-1: -Intrasexual selection occurs when members of one sex compete among each other for access to potential mates. Male–male competition is the most common form of intrasexual selection. Intersexual selection, or Oxford Bibliographies article Mate Choice (see the article by Kokko and Jennions).

Detailed explanation-2: -Intrasexual male competition occurs when males compete with one another for access to females or resources desired by females. This competition can occur directly, such as through contests, or indirectly through several methods including sperm competition, mate guarding, endurance rivalry, and sneaky copulations.

Detailed explanation-3: -Evidence suggests that male competition is capable of driving divergence and potentially contributing to the speciation process. First, male competition can generate strong selection that favors divergent phenotypes within and between populations.

Detailed explanation-4: -Competition between same-sex organisms, or intra-sexual selection, can occur before and after mating, and include processes such as sperm competition and cryptic female choice. One of the consequences of intra-sexual selection is that male reproductive traits tend to evolve and diverge at high rates.