Prostate gland secretion helps in the formation of

Which of the following initiates the preparation of uterus for the implantation of ovum?

Testosterone is secreted by

Formation of primitive streak in the chick embryo is the first sign of

During a woman's life time, she produces about

Polar bodies are produced during the formation of

Fertilization of ovum in mammals, takes place in

The post-embryonic growth is

The middle piece of the sperm contains

The gestation period of human being is