How many divisions occur when a isolated cell is divided into $128$ cells
$64$
$127$
$7$
$32$
Blastocyst is a modified blastula of
Unfertilized egg of human contains or When released from ovary, human egg contains
The layer of uterus which becomes much eroded due to placental villi is known as
Which event is possible when changes in layer of zona pellucida occurs by sperm at fertilizatioi time?
Unit cell of blastula is