If 2n=8, what shall be the number of chromatids in each daughter cell after meiosis-I?

Options

A. four
B. sixteen
C. two
D. eight

Answer

To determine the number of chromatids in each daughter cell after meiosis I when 2n = 8, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Diploid Number (2n)**:
- Given that 2n = 8, this means the diploid number of chromosomes in the parent cell is 8.

2. **Determine the Haploid Number (n)**:
- The haploid number (n) is half of the diploid number. Therefore, n = 2n/2 = 8/2 = 4. This means there are 4 chromosomes in each daughter cell after meiosis I.

3. **Understand Chromatid Structure**:
- Each chromosome is made up of two sister chromatids. Therefore, when we say there are 4 chromosomes in each daughter cell, we need to consider that each of these chromosomes consists of two chromatids.

4. **Calculate the Number of Chromatids**:
- Since each of the 4 chromosomes has 2 chromatids, the total number of chromatids in each daughter cell after meiosis I will be:
- Number of chromatids = Number of chromosomes × 2 = 4 × 2 = 8 chromatids.

5. **Conclusion**:
- After meiosis I, each daughter cell will have 8 chromatids.

### Final Answer:
Each daughter cell after meiosis I will have **8 chromatids**.

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