Final answer:
Intrasexual selection is the process by which males compete for mating opportunities, often resulting in the strongest males reproducing more frequently.
Step-by-step explanation:
Intrasexual selection is a type of sexual selection that rewards the strongest males with more mating opportunities.Sexual selection is a mode of natural selection where members of one biological sex choose mates of the other sex to mate with, and compete with members of the same sex for access to members of the opposite sex. Intrasexual selection, particularly within males, is often characterized by the competition for dominance. This can be through direct combat, displays of strength, or other demonstrations of superiority.
The winners of these contests usually gain increased access to females for mating, thus passing on their genes more frequently. This form of selection can lead to the development of secondary sexual characteristics in males, such as larger size, antlers, muscularity, or even behavioral traits that females may find attractive or that demonstrate the ability to provide good genes or resources. In some species, it can also contribute to the evolution of weapons used in male-to-male combat or threatening displays.