The primordial germ cells make their appearance from wall of
Amnion
Chorion
Allantois
Gonad
It's Obvious
Home use kits for determining a women's fertile period depend on the detection of one hormone in the urine. This hormone is
If both ovary remove from female than which hormone level decreased ?
Primary sex organs differ from the secondary sex organs in all the following, except
In Pheretima mouth develops from which of the following
When a small piece of dorsal lip of blastopore of frog's early gastrula is transplanted into another gastrula of similar age at ventral lip, the result is
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