The formation of endodermal and epidermal germ layers occurs at ________
A) gastrulation
B) fertilization
C) cleavage
D) blastula formation
A
Explanation:
B) The formation of germ layers does not occur at fertilization.
C) The formation of germ layers does not occur at cleavage.
D) The formation of germ layers does not occur at blastula formation.
Anatomy & Physiology
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