問題詳情
55. The outer-to-inner sequence of tissue layers in a post-gastrulation vertebrate embryo is____________.
(A) endoderm ectoderm - mesoderm
(B) mesoderm → endoderm → ectoderm
(C)ectoderm → mesoderm → endoderm
(D) ectoderm endoderm → mesoderm
參考答案
答案：C
難度：計算中-1
書單：沒有書單，新增