The number of polar bodies formed in frog during oogenesis is :

Options

A. 1
B. 2
C. 3
D. 4

Answer

To determine the number of polar bodies formed during oogenesis in frogs, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Oogenesis**: Oogenesis is the process of egg formation in females, which involves the development of the oogonium into a mature ovum.

2. **Mitosis to Primary Oocyte**: The process begins with the oogonium undergoing mitosis to produce a primary oocyte.

3. **Meiosis I**: The primary oocyte then undergoes the first meiotic division (Meiosis I). This division results in two cells: one secondary oocyte and one polar body. The polar body is a smaller cell that typically does not develop into a functional egg and is considered a waste product.

4. **Meiosis II**: The secondary oocyte then undergoes the second meiotic division (Meiosis II). This division results in one ovum (mature egg) and another polar body.

5. **Polar Body Division**: Importantly, the first polar body produced during Meiosis I can also undergo meiosis, resulting in two additional polar bodies.

6. **Total Polar Bodies**: Therefore, in frogs, the total number of polar bodies formed is:
- 1 polar body from Meiosis I
- 1 polar body from Meiosis II
- 2 additional polar bodies from the division of the first polar body
- This sums up to a total of 3 polar bodies.

### Conclusion:
Thus, the number of polar bodies formed in frogs during oogenesis is **3**.

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