Which of the following phase include meiosis during spermatogenesis ?

Options

A. Phase of multiplication
B. Phase of maturation division
C. Phase of growth
D. Spermiation

Answer

To solve the question regarding which phase includes meiosis during spermatogenesis, we can break down the process step by step.

### Step-by-Step Solution:

1. **Understanding Spermatogenesis**:
- Spermatogenesis is the process of sperm cell development in males. It involves several phases: multiplication, maturation division, growth, and spermation.

2. **Identifying the Phases**:
- **Multiplication Phase**: This phase involves mitosis, where the number of cells increases. It does not involve meiosis.
- **Maturation Division**: This phase is crucial as it involves meiosis. Here, primary spermatocytes undergo meiosis to form secondary spermatocytes.
- **Growth Phase**: In this phase, the cells undergo changes but do not involve meiosis. It is primarily a phase of cellular growth and differentiation.
- **Spermation Phase**: This is the final phase where mature spermatozoa are formed, but it does not include meiosis.

3. **Focusing on Maturation Division**:
- The key phase where meiosis occurs is the maturation division. In this phase, the primary spermatocyte (which is diploid, 2n) divides meiotically to produce secondary spermatocytes (which are haploid, n).

4. **Conclusion**:
- Therefore, the correct answer to the question is that meiosis occurs during the **Maturation Division** phase of spermatogenesis.

### Final Answer:
The phase that includes meiosis during spermatogenesis is the **Maturation Division**.

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