How many sperms are formed from a secondary spermatocyte?

Options

A. 4
B. 8
C. 2
D. 1

Answer

To determine how many sperms are formed from a secondary spermatocyte, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Spermatogenesis**:
- Spermatogenesis is the process of sperm formation that occurs in the seminiferous tubules of the testes. It involves several stages of cell division and differentiation.

2. **Starting with Spermatogonia**:
- The process begins with spermatogonia, which are diploid (2n) germ cells. They undergo mitotic division to increase in number.

3. **Formation of Primary Spermatocytes**:
- Some of the spermatogonia develop into primary spermatocytes, which are still diploid (2n).

4. **First Meiotic Division**:
- Primary spermatocytes undergo the first meiotic division (meiosis I), resulting in two secondary spermatocytes. At this stage, the secondary spermatocytes are haploid (n).

5. **Second Meiotic Division**:
- Each secondary spermatocyte then undergoes the second meiotic division (meiosis II). This division results in two spermatids from each secondary spermatocyte.

6. **Total Sperm from Secondary Spermatocytes**:
- Since there are two secondary spermatocytes produced from one primary spermatocyte, and each secondary spermatocyte produces two spermatids, the total number of spermatids (which will eventually mature into sperm) from the two secondary spermatocytes is four.

7. **Final Count of Sperm**:
- Therefore, from two secondary spermatocytes, we get four spermatids, which will mature into four spermatozoa. However, since the question asks for the number of sperms produced from one secondary spermatocyte, we divide the total by two.

8. **Conclusion**:
- Thus, from one secondary spermatocyte, two mature spermatozoa are produced.

### Final Answer:
**Two sperms are formed from one secondary spermatocyte.**

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