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If Gastrulation Was Blocked by an Environmental Toxin, Then ________

Question 21

Multiple Choice

If gastrulation was 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 the mouth

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