Question

Draw schematic representation of Oogenesis.

Hint:

Oogenesis results in the production of a single viable egg cell, while the others are non-functional polar bodies.

Answer 1

Step 1: Understanding Oogenesis.
Oogenesis is the process of female gamete (egg) formation in animals. The process occurs in the ovaries and involves the transformation of an oogonium into a mature ovum (egg). The schematic representation of oogenesis typically involves the following stages:
1. **Oogonium**: The stem cells in the ovaries that divide by mitosis to form primary oocytes.
2. **Primary oocyte**: These cells enter prophase I of meiosis and remain arrested until puberty.
3. **Secondary oocyte**: The primary oocyte completes meiosis I and gives rise to a secondary oocyte, which completes meiosis II only if fertilization occurs.
4. **Polar bodies**: Small cells that are produced during oogenesis but do not participate in reproduction.

Step 2: Conclusion.
Oogenesis produces one functional ovum and polar bodies, and it plays a crucial role in sexual reproduction.