問題詳情
3. Most causes of speciation are relatively slow, in that they may take many generations to see changes, with the exception of______.
(A) colonization
(B) sexual selection
(C) reinforcement
(D) natural selection
(E) polyploidy
參考答案
答案：E
難度：困難0.333333
統計：A(1),B(4),C(3),D(3),E(6)