In humans, identical twins are possible because
A) extraembryonic cells interact with the zygote nucleus.
B) convergent extension occurs.
C) early blastomeres can form a complete embryo if isolated.
D) the grey crescent divides the dorsal-ventral axis into new cells.

Question

Quizplus · Accepted Answer

Early blastomeres can form a complete embryo if isolated. This is the basis for the production of identical twins in humans. When the zygote splits into two separate cells, each cell has the potential to develop into a complete embryo if it is isolated from the other cell. This results in two genetically identical embryos, which will give rise to identical twins.

In Humans, Identical Twins Are Possible Because