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:
The process of transformation of immature cells into specialized cells in terms of structure and function is known as cell differentiation. Cells capable of differentiating into three germ layer cells are known as pluripotent (e.g., stem cells). Those able to differentiate into any type of cells are known as totipotent cells (e.g., zygote).
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