A cell has 46 chromosomes at each pole in mitotic telophase. In tis division the number of chromatids at the metaphase was :-

Options

A. 23
B. 46
C. 92
D. 69

Answer

To determine the number of chromatids at metaphase when a cell has 46 chromosomes at each pole in mitotic telophase, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Telophase**: In mitotic telophase, the chromosomes have been separated and are now at the poles of the cell. The question states that there are 46 chromosomes at each pole.

2. **Total Chromosomes in Telophase**: Since there are 46 chromosomes at one pole and 46 at the other, we can calculate the total number of chromosomes in the cell during telophase:
\[ \text{Total Chromosomes} = 46 (\text{pole 1}) + 46 (\text{pole 2}) = 92 \text{ chromosomes} \]

3. **Understanding Chromatids in Metaphase**: During metaphase, each chromosome consists of two sister chromatids. Therefore, if there are 92 chromosomes, we need to calculate the number of chromatids:
\[ \text{Total Chromatids} = 92 \text{ chromosomes} \times 2 = 184 \text{ chromatids} \]

4. **Conclusion**: Thus, the number of chromatids at metaphase is 184.

### Final Answer:
The number of chromatids at metaphase is **184**.