Multiple Choice
What occurs during gastrulation?
A) A hollow blastula is changed into a hollow embryo that has three tissue layers.
B) A solid blastula is changed into a hollow embryo that has four tissue layers.
C) A solid embryo is changed into a hollow morula.
D) A neural tube is created by invagination of the ectoderm.
Correct Answer:
Verified
Correct Answer:
Verified
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