noun
A biological term referring to the process by which certain traits become more common in a population because they increase mating success. Often contrasted with natural selection (自然淘汰).
See also: 性淘汰
クジャクの派手な羽は性選択の結果だと考えられている。
The peacock's showy feathers are thought to be a result of sexual selection.
性選択はダーウィンが提唱した概念の一つだ。
Sexual selection is one of the concepts proposed by Darwin.