Cell division is tightly regulated. Which of the following is TRUE regarding mitosis OR meiosis?
I. Mitosis shows no homologue pairing
II. There is no S phase between meiosis I and II
III. Meiosis centromeres do not divide at anaphase I.

Options

A. I and III only
B. I and II only
C. II only
D. I, II and III

Answer

To determine which statements regarding mitosis and meiosis are true, let's analyze each statement step by step.

### Step-by-Step Solution:

1. **Statement I: Mitosis shows no homologue pairing.**
- In mitosis, the chromosomes are duplicated and then separated into two daughter cells. There is no pairing of homologous chromosomes, which is a characteristic feature of meiosis. Therefore, this statement is **TRUE**.

2. **Statement II: There is no S phase between meiosis I and II.**
- The S phase (synthesis phase) is when DNA is replicated. In meiosis, after meiosis I, the cell does not enter another S phase before meiosis II. The DNA is already replicated prior to meiosis I, and it remains in that state as the cell progresses to meiosis II. Thus, this statement is also **TRUE**.

3. **Statement III: Meiosis centromeres do not divide at anaphase I.**
- During anaphase I of meiosis, homologous chromosomes are pulled apart, but the sister chromatids remain attached at their centromeres. This means that the centromeres do not divide at this stage. Therefore, this statement is **TRUE**.

### Conclusion:
All three statements are true regarding mitosis and meiosis. Therefore, the correct answer is that **I, II, and III are all true**.

### Final Answer:
All statements (I, II, and III) are TRUE.

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