A cell has 48 chromosomes at each pole in mitotic telophase. In this division the number of chromatids at the metaphase was :

Options

A. 24
B. 96
C. 69
D. 46

Answer

To solve the problem, we need to understand the relationship between chromosomes and chromatids during the different stages of mitosis.

### Step-by-Step Solution:

1. **Understanding Chromosomes in Telophase**:
- The question states that there are 48 chromosomes at each pole during mitotic telophase. Since telophase is the final stage of mitosis, this indicates that the cell has completed the division process and has separated its genetic material into two daughter cells.

2. **Chromosome Count in Metaphase**:
- During metaphase, chromosomes are aligned at the equatorial plate of the cell. Since mitosis is an equational division, the number of chromosomes remains the same throughout the process. Therefore, if there are 48 chromosomes at each pole in telophase, there were also 48 chromosomes during metaphase.

3. **Understanding Chromatids**:
- Each chromosome consists of two sister chromatids that are joined at the centromere. Hence, if there are 48 chromosomes, each with 2 chromatids, we can calculate the total number of chromatids.

4. **Calculating the Number of Chromatids**:
- To find the total number of chromatids at metaphase, we multiply the number of chromosomes by 2 (since each chromosome has 2 chromatids):
\[ \text{Total chromatids} = \text{Number of chromosomes} \times 2 = 48 \times 2 = 96 \]

5. **Conclusion**:
- Therefore, the number of chromatids at metaphase is 96.

### Final Answer:
The number of chromatids at metaphase was **96**.

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