Suppose males of a bird species have much more colorful plumage than the females and that the intensity of red color varies in males.Which would be the best evidence that intrasexual selection was occurring?
A) Females prefer to mate with males that are brighter red.
B) Males that are brighter red have a higher survival rate than paler males.
C) Males that are brighter red have a lower survival rate than paler males.
D) Males that are brighter red outcompete paler males for access to females.
E) Males that are brighter red have more offspring than paler males.

Question

Quizplus · Accepted Answer

Intrasexual selection involves competition among the same sex for access to mates. If brighter red males outcompete paler males for access to females, it indicates intrasexual selection.

Suppose Males of a Bird Species Have Much More Colorful