14. 在加拉巴哥群島因為乾旱導致植物種子變大而堅硬,取食種子的中型地雀(medium
ground-finch)鳥喙大小在隨後的幾年亦加大,這現象可符合下列哪種天擇?
(A)分歧性天擇(disruptive selection)
(B)方向性天擇(directional selection)
(C)穩定性天擇(stabilizing selection)
(D)平衡性天擇(balancing selection)
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統計: A(16), B(406), C(46), D(6), E(0) #2082390
統計: A(16), B(406), C(46), D(6), E(0) #2082390