Question

How is an embryo developed?​

Answer 1

Explanation:

The fertilized egg (zygote) divides repeatedly as it moves down the fallopian tube to the uterus. First, the zygote becomes a solid ball of cells. ... Inside the uterus, the blastocyst implants in the wall of the uterus, where it develops into an embryo attached to a placenta and surrounded by fluid-filled membranes

Answer 2

Each embryo starts development as a zygote, a single cell resulting from the fusion of gametes (i.e. fertilization of a female egg cell by a male sperm cell). ... Next, the cells in a blastula-stage embryo start rearranging themselves into layers in a process called gastrulation.