The Gray Crescent Is the Region of the Amphibian Egg

question 89

Multiple Choice

The gray crescent is the region of the amphibian egg

• A) corresponding to the site of sperm penetration.
• B) where gastrulation begins.
• C) that was unpigmented before cytoplasmic rearrangement.
• D) where the ventral lip of the blastopore develops.
• E) that is formed at ovulation and prior to fertilization.

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