Binary fission occurs in

Both corpus luteum and macula lutea is

The members of a clone may different genetically , when there is a

Semen consists of an enzyme called

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

The middle piece of the sperm contains

Antifertilizin is present on

Female gamete develops into a new individual without being fertilized by a male gamete is called

Prostate gland secretion helps in the formation of

The upper pigmented part of egg is concerned with