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

Question

Quizplus · Accepted Answer

Identical twins occur when a single embryo splits into two separate embryos. This is possible because early blastomeres, or the first few cells of the developing embryo, can form a complete embryo if isolated. In the case of identical twins, this occurs naturally during early development. The other options (A, B, and D) are not related to the formation of identical twins.

In Humans, Identical Twins Are Possible Because ________