問題詳情

7. The number of legs an insect has, and the number of vertebrae in a vertebral column are all strongly influenced by________ genes.
(A) haploid
(B) introns within
(C) heterotic
(D) Hox
(E) SRY

參考答案

答案：D
難度：適中0.5
統計：A(1),B(5),C(2),D(11),E(1)