How many chromosome shall be present in a diploid cell at mitotic anaphase if its egg cell has ten chromosome :-

Options

A. 10 (Ten)
B. 20(Twenty)
C. 30(Thirty)
D. 40(Forty)

Answer

To determine how many chromosomes are present in a diploid cell at mitotic anaphase when its egg cell has ten chromosomes, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Egg Cell Chromosome Number**:
- An egg cell is a type of gamete and is haploid. This means it contains half the number of chromosomes compared to a diploid cell.
- Given that the egg cell has 10 chromosomes, this indicates that it is haploid (n = 10).

2. **Determining Diploid Chromosome Number**:
- A diploid cell contains two sets of chromosomes, one from each parent. Therefore, the diploid number (2n) is double that of the haploid number (n).
- Since the haploid number (n) is 10, the diploid number (2n) can be calculated as follows:
\[ 2n = 2 \times 10 = 20 \]

3. **Chromosome Number at Mitotic Anaphase**:
- During mitosis, specifically at the anaphase stage, the sister chromatids of each chromosome are separated and pulled to opposite poles of the cell.
- At this stage, the total number of chromosomes remains the same as in the diploid cell, which is 20. Each chromatid is considered a separate chromosome during this phase.

4. **Conclusion**:
- Therefore, at mitotic anaphase, the diploid cell will have a total of 20 chromosomes.

### Final Answer:
The diploid cell at mitotic anaphase will have **20 chromosomes**.

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