問題詳情
37. In a comparison of birds and mammals, the condition of having four limbs is
(A) a shared derived character.
(B) a shared ancestral character.
(C) a character useful for distinguishing birds from mammals.
(D) an example of analogy rather than homology.
參考答案
答案：[無官方正解]
難度：計算中-1
書單：沒有書單，新增