問題詳情
24. A biologist doing a long-term study on a wild spider population observes increased variation in silk thickness. Which ofthe following could the spider population be experiencing?
(A) directional selection
(B) genetic drift
(C) disruptive selection
(D) stabilizing selection
(E) founder effect
參考答案
答案：C
難度：適中0.416667
統計：A(1),B(2),C(5),D(4),E(0)