Multiple Choice
If gastrulation were blocked by an environmental toxin, then
A) cleavage would not occur in the zygote.
B) embryonic germ layers would not form.
C) fertilization would be blocked.
D) the blastula would not be formed.
E) the blastopore would form above the grey crescent in the animal pole.
Correct Answer:

Verified
Correct Answer:
Verified
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