Which of the following is not a postzygotic isolation mechanism?
A) Abnormal meiosis following fertilization
B) Infertile hybrids
C) Reduced viability of hybrids
D) Abnormal mitosis following fertilization
E) Variation in mating pheromones

Question

Quizplus · Accepted Answer

Variation in mating pheromones is a prezygotic isolation mechanism, as it prevents mating or fertilization from occurring in the first place. The other options are postzygotic mechanisms, which occur after fertilization.

Which of the Following Is Not a Postzygotic Isolation Mechanism