Cleavage is followed by which stage
Invagination
Evagination
Gastrula
Blastula
(d)Cleavage start after fertilization upto late blastula.
Sex of baby has been decided at which stage ?
Which statement is correct for fertilization
Assertion : In morula stage, cells divide without increase in size.
Reason : Zona pellucida remains undivided till cleavage is complete.
On fertilization of egg nucleus with sperm nucleus
Give scientific reasons : Enzymes are secreted from the cells of trophoblast.
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