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ppk ppk
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If gastrulation was blocked by an environmental toxin, then   
A) the blastula would not be formed.
B) the blastopore would form above the gray crescent in the animal pole.
C) cleavage would not occur in the zygote.
D) fertilization would be blocked.
E) embryonic germ layers would not form.
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bio_manbio_man
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ppk Author
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12 years ago
Thank you! I will mark as solved. Smiling Face with Open Mouth
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