AP BIOLOGY

Detailed explanation-1: -sexual selection, theory in postulating that the evolution of certain conspicuous physical traits-such as pronounced coloration, increased size, or striking adornments-in animals may grant the possessors of these traits greater success in obtaining mates.

Detailed explanation-2: -Sexual selection refers to a situation in which NS acts on traits that contribute to an organism’s mating success. It is the kind of selection that results in obvious physical differences between males and females (these physical differences do not include difference in the reproductive systems or sex organs).

Detailed explanation-3: -By choosing certain males, their offspring will likely inherit genes that tend to increase their fitness. Males often evolve traits and displays that advertise their ability to provide direct and indirect benefits, and females evolve preferences for these traits.

Detailed explanation-4: -Sexual selection is a mode of natural selection in which members of one biological sex choose mates of the other sex to mate with (intersexual selection), and compete with members of the same sex for access to members of the opposite sex (intrasexual selection).

Detailed explanation-5: -As discussed, sexually selected traits include the elaboration of physical ornaments (e.g., horn size or plumage), physical size, and adult behavior.