Implantation of egg is followed by
Fertilization
Copulation
Parturition
Gestation
It's Obvious
$A$ : In morula stage the cells divide without any increase in size. $R$ : Zona pellucida remains intact till cleavage is completed.
In sexually reproducing animals the union of male and female gamete forms a cell which is called
Cleavage is found in
Write a note on pregnancy and embryonic development in human beings.
A sperm without acrosome, cannot
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