In which stage of development the embryonic cells form the germinal layers by the movement
Morula
Blastula
Gastrula
Neurula
Egg undergoes cleavage and forms
What happens during fertilization in humans after many sperms reach close to the ovum?
The outer layer of the blastocyst which forms the ectoderm is called
Fertilization occurs in human, rabbit and other placental mammals in
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