4 years ago

what happens during implantation? &The embryo is developed enough to be called a fetus at the end of which stage?

1 answer:

7 0

By the Time the zygote reaches the uterus, the dividing ball of cells has separated into two sections.T<span>he inner group of cells will become the embryo. The outer group will become the cells that nourish and protect it.
</span>2. The embryonic period

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