Oogenesis is an example of

Options

A. Mitosis
B. Meiosis
C. Specialisation of cell
D. DNA replication

Answer

**Step-by-Step Text Solution:**

1. **Understanding Oogenesis**: Oogenesis is the process of formation of egg cells (ova) in the female reproductive system. It begins with primordial germ cells that develop into primary oocytes.

2. **Chromosomal Content**: The primary oocytes are diploid, meaning they contain two sets of chromosomes. During oogenesis, these diploid cells undergo division to form haploid cells.

3. **Meiosis Process**: The division that occurs during oogenesis is meiosis, which is a type of cell division specifically for the formation of gametes (sperm and egg). Meiosis is also known as reductional division because it reduces the chromosome number by half.

4. **Formation of Gametes**: In oogenesis, the primary oocyte undergoes meiosis to produce secondary oocytes and ultimately ova (egg cells). This process results in the formation of haploid gametes from diploid precursors.

5. **Eliminating Incorrect Options**:
- **Mitosis**: This is an equational division where the chromosome number remains the same in daughter cells as in the parent cell, and it occurs in somatic cells, not germ cells.
- **Specialization of Cell**: This term refers to the differentiation of cells into specialized types, which is not the primary focus of oogenesis.
- **DNA Replication**: While DNA replication is a necessary process for cell division, it is not the defining characteristic of oogenesis.

6. **Conclusion**: Since oogenesis involves the reduction of chromosome number through meiosis, the correct answer to the question is that oogenesis is an example of meiosis.

**Final Answer**: Oogenesis is an example of meiosis.

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