Go through the following statements
(i) Meiosis never occurs in haploid cells
(ii) Meiosis occurs in sperm and egg
(iii) Mitosis heals wound
(iv) Crossing over occurs between sister chromatids of a chromosome in pachytene
(v) In anaphase centromere splits but chromatids do not separate.

Options

A. All are correct
B. (i) and (iii) are correct
C. (i), (ii) and (v) are correct
D. Only (ii) is correct

Answer

To analyze the given statements regarding meiosis, mitosis, and chromosomal behavior, let's evaluate each statement one by one.

### Step-by-Step Solution:

1. **Statement (i): Meiosis never occurs in haploid cells.**
- **Analysis:** This statement is **false**. Meiosis typically occurs in diploid cells to produce haploid gametes. However, in some organisms, haploid cells can undergo a form of meiosis, such as in certain fungi and algae.

2. **Statement (ii): Meiosis occurs in sperm and egg.**
- **Analysis:** This statement is **true**. Meiosis is the process that produces gametes (sperm and eggs) from diploid germ cells. During meiosis, the chromosome number is halved, resulting in haploid cells.

3. **Statement (iii): Mitosis heals wounds.**
- **Analysis:** This statement is **true**. Mitosis is responsible for growth and repair in multicellular organisms. When a wound occurs, mitotic division of cells at the wound site helps in healing.

4. **Statement (iv): Crossing over occurs between sister chromatids of a chromosome in pachytene.**
- **Analysis:** This statement is **false**. Crossing over occurs between non-sister chromatids of homologous chromosomes during prophase I of meiosis, specifically in the pachytene stage. Sister chromatids do not undergo crossing over.

5. **Statement (v): In anaphase, the centromere splits but chromatids do not separate.**
- **Analysis:** This statement is **false**. In anaphase of mitosis and meiosis II, the centromere splits, and the sister chromatids separate and move towards opposite poles of the cell.

### Summary of Statements:
- (i) False
- (ii) True
- (iii) True
- (iv) False
- (v) False

### Conclusion:
The true statements among the given options are (ii) and (iii).