問題詳情
49. A major disadvantage of using DNA or RNA sequences to identify species is that
(A) it can only be used for sexually reproducing organisms.
(B) it cannot be used for extinct species.
(C) there are no rules for determining the number of sequence differences needed for a new species.
(D) if can be misleading because many species exhibit large variation in phenotype.
(E) it is expensive to sequence genomic DNA
參考答案
答案：C
難度：計算中-1
書單：沒有書單，新增