Multiple Choice
In humans, identical twins are possible because ________.
A) cytoplasmic determinants are distributed unevenly in unfertilized eggs
B) extraembryonic cells interact with the zygote nucleus
C) early blastomeres can form a complete embryo if isolated
D) the gray crescent divides the dorsal-ventral axis into new cells
Correct Answer:
Verified
Correct Answer:
Verified
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