Solution

This happens in mammalian oocytes. In female mammals, the formation of eggs begins while the female Is still in the womb. But meiosis gets arrested In diplotene stage itself. This pause continues till the female attains sexual maturity. Once the adolescence phase begins. meiosis gets resumed but this does not happen to all the oocytes. This happens in a phased manner because in each ovulation cycle; only a certain number of eggs are released by the ovary. For example; in human beings. only one egg Is released at roughly once in a month. This process continues till the cessation of reproductive capability in the female. The cell cycle is completed only if the egg is fertilized by the sperm.