Among the following who is regarded to be the founder of modern embryology

Sperms become non-motile in the vagina in

Androgen binding protein which helps in concentrating testosterone in the seminiferous tubule, and which inhibits $ICSH$ secreted by anterior pituitary and $GnRH$ production by hypothalamus is secreted by

In a normal pregnant woman, the amount of total gonadotropin activity was assessed. The result expected was

Tertiary egg membrane is