Which one of the following statements is not true for meiosis?

Options

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

Answer

To determine which statement is not true for meiosis, we need to analyze the provided statements regarding the process of meiosis.

### Step-by-Step Solution:

1. **Understanding Meiosis**: Meiosis is a specialized type of cell division that reduces the chromosome number by half, resulting in the formation of gametes (sperm and egg cells). It consists of two sequential divisions: meiosis I and meiosis II.

2. **Evaluating the Statements**:
- **Statement 1**: "It occurs in reproductive tissue only."
- This statement is generally true as meiosis primarily occurs in the reproductive organs to produce gametes.

- **Statement 2**: "Chromosomes undergo pairing in early prophase 1."
- This statement is true. During prophase I of meiosis, homologous chromosomes pair up in a process called synapsis.

- **Statement 3**: "Chromosomes do not exchange genetic material."
- This statement is **not true**. During meiosis, specifically in prophase I, crossing over occurs where homologous chromosomes exchange segments of genetic material, leading to genetic variation.

- **Statement 4**: "Centromeres do not divide during anaphase 1."
- This statement is true. In anaphase I, homologous chromosomes are pulled apart, but the centromeres do not split until meiosis II.

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

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

---