How many sperm and ova will be formed from 50 secondary oocytes and 50 secondary spermatocytes in human :-

Options

A. 50 ova & 200 sperm
B. 50 ova & 100 sperm
C. 100 ova & 200 sperm
D. 100 ova & 400 sperm

Answer

To solve the question of how many sperm and ova will be formed from 50 secondary oocytes and 50 secondary spermatocytes in humans, we can break it down step by step:

### Step-by-Step Solution:

1. **Understanding Secondary Oocytes**:
- Each secondary oocyte undergoes the final stages of meiosis just before fertilization.
- When a secondary oocyte completes its development, it produces one ovum (egg) and a second polar body (which typically does not contribute to fertilization).

2. **Calculating Ova from Secondary Oocytes**:
- Since each secondary oocyte produces one ovum, from 50 secondary oocytes, we will get:
\[ 50 \text{ secondary oocytes} \rightarrow 50 \text{ ova} \]

3. **Understanding Secondary Spermatocytes**:
- Each secondary spermatocyte undergoes the second meiotic division, which results in the formation of four spermatids.
- These spermatids then mature into spermatozoa (sperm).

4. **Calculating Sperm from Secondary Spermatocytes**:
- Since each secondary spermatocyte produces four spermatozoa, from 50 secondary spermatocytes, we will get:
\[ 50 \text{ secondary spermatocytes} \rightarrow 50 \times 4 = 200 \text{ sperm} \]

5. **Final Result**:
- Therefore, the total number of ova formed is 50, and the total number of sperm formed is 200.

### Conclusion:
- **Total Ova**: 50
- **Total Sperm**: 200