Reproductive isolation
A) means there is no gene flow between two groups of organisms (species).
B) is necessary for species to remain separate.
C) is maintained by certain prezygotic and postzygotic barriers.
D) All of the choices are correct.
E) None of the choices are correct.

Question

Quizplus · Accepted Answer

Reproductive isolation involves the absence of gene flow between two groups of organisms, which is option A. It is also necessary for species to remain separate, which is option B. Reproductive isolation is maintained by prezygotic (before fertilization) and postzygotic (after fertilization) barriers, which is option C. Therefore, all of the choices are correct, making option D the best choice.

Reproductive Isolation