Natural selection would rarely favor the evolution of which type of reproductive isolating barriers?
A) Mechanical isolation
B) Gametic isolation
C) Behavioral isolation
D) Temporal isolation
E) Hybrid infertility

Question

Quizplus · Accepted Answer

Natural selection tends to favor mechanisms that prevent the formation of less fit hybrids before they are produced, rather than after. Hybrid infertility is a postzygotic barrier, which means it occurs after fertilization. If two species can mate and produce hybrid offspring, but those offspring are infertile, the energy invested in producing them is essentially wasted from an evolutionary standpoint. Prezygotic barriers like mechanical, gametic, behavioral, and temporal isolation prevent such wasteful matings from occurring in the first place, making them more likely to be favored by natural selection.

Natural Selection Would Rarely Favor the Evolution of Which Type