Answer:
They do not spend much (if any) time in G2.
Explanation:
In simple words,Human embryo evolution, or biological embryogenesis, applies to fertilized embryo growth and creation. The embryonic stage includes the time between fertilisation to initial embryo creation before uterine fertilisation is complete. It takes about 10 days to get the embryonic point. The sperm as well as egg genetic material then merge to produce a single unit named a zygote as well as the embryonic phase of growth begins