Oogenesis
The formation of the ovum (mature female gamete) from undifferentiated germ cells is called oogenesis. This process takes place in the ovaries (female gonads). Oogenesis consists of three stages known as the multiplication phase, growth phase, and maturation phase.
Cell Division
Cell division involves the formation of new daughter cells from the parent cells. It is a part of the cell cycle that takes place in both prokaryotic and eukaryotic organisms. Cell division is required for three main reasons:
Explain Cohesin's action in mitosis and meiosis?
Mitosis - Mitosis is a process in which one cell divides to form the two new daughter cells. These two new daughter cells looks exactly same to each other. these two new daughter cells contains same amount of genetic material as present in the mother cell.
Meiosis - Meiosis is a process in which one cell divides to form 4 new daughter cells. These 4 new daughter cells contains haploid amount of chromosomes as compared to the mother cells.
This process of meiosis occurs at the time of gamete formation like:
1. Spermatogenesis
2. Oogenesis
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