Select the correct statement
Cleavage follows gastrulation
Yolk content of egg has no role in cleavage
Cleavage is repeated mitotic division of zygote
Gastrulation & blastulation are followed by each other
The period of preparation with reference to developmental phenomena in vertebrates means
When more than one sperm establish contact and penetrate into the egg, then it is called
The correct sequence of spermatogenetic stages leading to the formation of sperms in a mature human testis is
The uteri and vagina lie in a fold of peritoneum called
Which cell organelle is absent in human sperm?