Sperm lysins contains
Hyaluronidase
Corona penetrating enzyme
Acrosin
All of the above
During gastrulation ....... is formed
The cyclic period of sexual activity in non-human female mammals is called
Meroblastic cleavage refers to one of the following types of division of eggs
When both $LH$ and $FSH$ attain peak level in the menstrual cycle ?
The human sperms were first seen and discovered by