AP BIOLOGY

Detailed explanation-1: -Another mechanism of sexual selection is female mate choice (intersexual selection), whereby females choose males as sexual partners based on preferences for males’ traits (Puts, 2010).

Detailed explanation-2: -As with intrasexual selection, the sex that invests less per offspring is usually the male. Thus, this type of selection is often referred to as female choice; the females choose on the basis of male displays or attributes.

Detailed explanation-3: -Intrasexual selection is not as common among females; however, there are still examples. The spotted hyena is an example where the females are larger than the males. The female hyenas within a population will fight for both mating and feeding rights.

Detailed explanation-4: -Intersexual selection involves both sexes. If members of one sex have a consensus about the desirable characteristics of the opposite sex, then those individuals with the desired characteristics will have a mating advantage. One example is the size and decorative coloration of feathers seen on many male birds.

Detailed explanation-5: -Intrasexual selection refers to the within-sex component of the broader process of sexual selection (Darwin 1871). Whereas the other half, intersexual selection, is characterized by the choice of mates by the opposite sex, intrasexual selection refers to competition with members of the same sex.