In meiosis :-

Options

A. Division of nucleus twice but replication of DNA only once
B. Division of nucleus twice and replication of DNA twice
C. Division of nucleus once and replication of DNA is also once
D. Division of nucleus once and DNA - replication is twice

Answer

### Step-by-Step Solution:

1. **Understanding Meiosis**: Meiosis is a type of cell division that reduces the chromosome number by half, resulting in the production of four genetically diverse daughter cells from one parental cell. This process is essential for sexual reproduction.

2. **Phases of Meiosis**: Meiosis consists of two main stages: Meiosis I and Meiosis II. Each of these stages includes several phases:
- **Meiosis I**: This is the reductional division where homologous chromosomes are separated.
- **Meiosis II**: This is the equational division where sister chromatids are separated.

3. **DNA Replication**: DNA replication occurs only once before meiosis begins, specifically during the S phase of interphase. This means that the genetic material is duplicated before the two meiotic divisions occur.

4. **Outcome of Meiosis**: The end result of meiosis is the formation of four haploid daughter cells, each with half the number of chromosomes compared to the original cell. This is crucial for maintaining the chromosome number across generations during sexual reproduction.

5. **Evaluating Statements**: The question provides four statements regarding meiosis, and we need to identify the correct one.
- The correct statement should reflect that there is one DNA replication followed by two meiotic divisions, resulting in four daughter cells.

6. **Conclusion**: Based on the understanding of meiosis, the correct statement is that there is one DNA replication and two divisions, leading to the formation of four daughter cells.