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)convergent extension occurs.
D)early blastomeres can form a complete embryo if isolated.
E)the grey crescent divides the dorsal-ventral axis into new cells.

Question

Quizplus · Accepted Answer

Identical twins occur when early blastomeres, which are cells formed during the early stages of embryonic development, separate and each develops into a complete embryo.

In Humans, Identical Twins Are Possible Because