Which type of sexual selection involves individuals of one sex being choosy in selecting mates from the other sex?

Which type of sexual selection involves individuals of one sex being choosy in selecting mates from the other sex?

• A. Mechanical Isolation
• B. Intersexual Selection
• C. Prezygotic Barrier
• D. Postzygotic Barrier

Answer: (B)

Intersexual selection is the process where one sex is choosy and selects mates from the other sex. This happens when individuals prefer certain traits in potential mates—like bright colors, elaborate courtship displays, or complex songs—and this preference influences which individuals get to mate and pass on their genes. Over time, those preferred traits become more pronounced in the population, leading to noticeable differences between the sexes. This is different from intra-sexual selection, where members of the same sex compete with each other for access to mates rather than one sex choosing. The other terms describe barriers to mating or fertilization, not the act of choosing a mate based on traits.

Intersexual selection is the process where one sex is choosy and selects mates from the other sex. This happens when individuals prefer certain traits in potential mates—like bright colors, elaborate courtship displays, or complex songs—and this preference influences which individuals get to mate and pass on their genes. Over time, those preferred traits become more pronounced in the population, leading to noticeable differences between the sexes. This is different from intra-sexual selection, where members of the same sex compete with each other for access to mates rather than one sex choosing. The other terms describe barriers to mating or fertilization, not the act of choosing a mate based on traits.