Unfertilized egg of human contains or When released from ovary, human egg contains
One $Y$ chromosome
$X$ and $Y$ chromosome
$XX$ chromosome
One $X$ chromosome
Which event is possible when changes in layer of zona pellucida occurs by sperm at fertilizatioi time?
The cleavage is such method of divisions of fertilized egg in which the egg
The solid mass of cells formed at the end of cleavage of mammalian egg is
Find $A$ to $D$ in figure
Where does the first cleavage division of zygote take place ?