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ppk ppk
wrote...
Valued Member
On Hiatus
Posts: 3560
13 years ago
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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Answer accepted by topic starter
bio_manbio_man
wrote...
Educator
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Posts: 33292
13 years ago
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ppk Author
wrote...
Valued Member
On Hiatus
13 years ago
Thank you! I will mark as solved. Smiling Face with Open Mouth
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