By the end of the first month and a half, all embryos would've developed, regardless of gender.

The embryos of amniotes are either laid as eggs or develop in the female.

It is similar to vivipary in that the embryo develops within the mother's body.

As an embryo develops, it takes on a series of ancestral forms.

They implanted these embryos and some of them finally developed into full mice.

As a scientist, her purpose is to understand how embryos develop.

Either the embryo was developing normally again or it wasn?

There are a number of differences, most notably in how the embryo develops.

At the time, there was considerable scientific debate over the question of how an embryo developed.