Which one of the following is the significance of mitosis

Options

A. Restricted to haploid cells
B. Cell repair
C. Increase in genetic variability
D. Recombination of chromosomes

Answer

### Step-by-Step Solution:

1. **Understanding Mitosis**: Mitosis is a type of cell division known as equational division. It results in two daughter cells that are genetically identical to the parent cell, maintaining the same number of chromosomes.

2. **Evaluating the Options**:
- **Option 1**: "It is restricted to haploid cells." This statement is incorrect because mitosis occurs in both haploid and diploid cells. While haploid cells can undergo mitosis, the majority of somatic (body) cells, which are diploid, also undergo mitosis.

- **Option 2**: "Cell repair." This statement is correct. Mitosis plays a crucial role in repairing tissues. For instance, when there is an injury, mitosis helps in the regeneration of cells to heal the wound.

- **Option 3**: "Increase genetic variability." This statement is incorrect in the context of mitosis. Mitosis does not increase genetic variability; that is a feature of meiosis, which involves recombination and leads to genetic diversity.

- **Option 4**: "Increase genetic variability." Similar to option 3, this statement is also incorrect for mitosis.

3. **Conclusion**: The only correct significance of mitosis from the provided options is that it aids in cell repair. Therefore, the correct answer is **Option 2**.