問題詳情

64. Which of the following is common to both avian and mammalian development?
(A) holoblastic cleavage.
(B) epiblast and hypoblast.
(C) trophoblast.
(D) yolk plug.
(E) gray crescent.

參考答案

答案：B
難度：適中0.4
統計：A(0),B(4),C(1),D(1),E(1)