Assertion: During anaphase, centromere of each chromosome splites and chromatids separate.
Reason: During anaphase, chromatids move to opposte poles.

Options

A. If both assertion and reason are true and reason is the correct explantion of assertion
B. If both assertion and reason are true but reason is not the correct explnantion of assertion.
C. If assertion is true but reason is false.
D. If both assertion and reason are false.

Explanation

To solve the question, we need to analyze both the assertion and the reason provided.

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that "During anaphase, the centromere of each chromosome splits and chromatids separate."
- This is a true statement. During anaphase, the centromere, which is the region of the chromosome where the two sister chromatids are joined, splits. This allows the sister chromatids to separate and move towards opposite poles of the cell.

2. **Understanding the Reason**:
- The reason states that "During anaphase, chromatids move to opposite poles."
- This statement is also true. After the centromeres split, the sister chromatids are pulled apart by the spindle fibers and move towards opposite ends of the cell.

3. **Analyzing the Relationship**:
- While both the assertion and the reason are true, the reason does not provide a correct explanation for the assertion. The separation of chromatids (the assertion) is due to the splitting of the centromeres, while the movement of chromatids to opposite poles (the reason) occurs after the separation has taken place.

4. **Conclusion**:
- Since both statements are true but the reason does not explain the assertion correctly, the correct answer is that both the assertion and reason are true, but the reason is not the correct explanation of the assertion.

### Final Answer:
- The correct option is: **Both assertion and reason are true, but reason is not the correct explanation of the assertion.**

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