問題詳情
47. During the embryo development, the correct steps is
(A)astula ＞cleavage ＞gastrulation ＞rganogenesis.
(B) blastula ＞ gastrulation ＞ cleavage＞
(C) cleavage ＞ blastula ＞ organogenesis＞ gastrulation.
(D) cleavage ＞ blastula ＞ gastrulation ＞ organogenesis.
參考答案
答案：99
統計：A:0,B:0,C:0,D:0,E:0
難度：計算中