The third phase in the development of a mammal is
Cleavage
Gastrulation
Gametogenesis
Fertilization
It's Obvious
Receptors for sperm binding in mammals are present on :
Cleavage is followed by which stage
The layer of cells immediately surrounding the ovum but outside the zona pellucida is called
Fertilization is
$A$ : In morula stage the cells divide without any increase in size. $R$ : Zona pellucida remains intact till cleavage is completed.
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