The outer layer of the blastocyst which forms the ectoderm is called
Cnidoblast
Germinal vesicle
Trophoblast
Amnion
It's Obvious
If ovaries of a pregnant mammal are removed
Pregnancy begins with implantation of
Explain : When and how the sex of the baby is determined ?
Which event is possible when changes in layer of zona pellucida occurs by sperm at fertilizatioi time?
In sexually reproducing animals the union of male and female gamete forms a cell which is called
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