Which one of the following statements is not true for meiosis:-

Options

A. It occur in reproductive tissue only
B. Chromosome undergo pairing in early prophase-I
C. Chromosome do not exchange part
D. Centromere do not divide during anaphase-I

Answer

To determine which statement is not true for meiosis, we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Identify the Statements**: We need to evaluate the given statements about meiosis. The statements typically include facts about where meiosis occurs, the behavior of chromosomes, and the processes involved.

2. **Evaluate Each Statement**:
- **Statement 1**: "Meiosis occurs in reproductive tissue only."
- This statement is **true**. Meiosis is a type of cell division that specifically occurs in reproductive tissues to produce gametes (sperm and eggs).

- **Statement 2**: "Chromosomes undergo pairing in the early prophase 1."
- This statement is **true**. During prophase 1 of meiosis, specifically in the zygotene stage, homologous chromosomes pair up.

- **Statement 3**: "Chromosomes do not exchange parts."
- This statement is **not true**. In meiosis, particularly during the pachytene stage of prophase 1, chromosomes do exchange parts through a process called crossing over.

- **Statement 4**: "Centromeres do not divide during anaphase 1."
- This statement is **true**. In anaphase 1 of meiosis, homologous chromosomes are separated, but the centromeres do not divide until anaphase 2.

3. **Conclusion**: The statement that is not true for meiosis is **Statement 3**: "Chromosomes do not exchange parts."

### Final Answer:
The statement that is not true for meiosis is: **"Chromosomes do not exchange parts."**

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