Which event is possible when changes in layer of zona pellucida occurs by sperm at fertilizatioi time?
Sperm enters into ovum
Block the entry of additional sperms into ovum.
Stop the fertilization process and prevent are pregnancy.
Possible fertilization process make possible and pregnancy occurs.
If $X$ chromosome contained sperm entered in $X$ chromosome contained ovum than ...... is produced
Which one of the following statements about morula in humans is correct?
Unfertilized egg of human contains or When released from ovary, human egg contains
The solid mass of cells formed at the end of cleavage of mammalian egg is
Fertilisation of an egg cell it means......
$(1)$ End of process of oogenesis
$(2)$ Induces the completion of the second meiotic division
$(3)$ The corpus luteum degenerates
$(4)$ Signals for maintain progesterone level in blood
$(5)$ Formation of zygote