The process of formation of ova in the ovary is called as oogenesis.
The germ cells are found in the form of germinal epthelium around the ovary.These cells are diploid and are called P.G.C.
The process of oogenesis is a continuous process but for the convenience or study it is divided into three phases-
1. MULTIPLICATION PHASE
2. GROWTH PHASE
Chemical Organization of Yolk
3. MATURATION PHASE