Assertion :- In a mosaic female cat orange and black patches of fur are present.
Reason: At some place orange gene is suppressed and in some skin cells black gene is suppressed.

Options

A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.
B. If both Assertion & Reason are true but Reason is not a correct explanation of the Assertion.
C. If Assertion is True but the Reason is Flase.
D. If both Assertion & Reason are false.

Answer

**Step-by-Step Solution:**

1. **Understanding the Assertion:**
- The assertion states that in a mosaic female cat, there are orange and black patches of fur. This is a known phenomenon in genetics, particularly in cats, where the fur color can be a result of X-chromosome inactivation.

2. **Understanding the Reason:**
- The reason provided states that in some areas, the orange gene is suppressed, while in others, the black gene is suppressed. This aligns with the concept of X-inactivation, where one of the two X chromosomes in female mammals is randomly inactivated in each cell.

3. **Evaluating the Truth of the Assertion:**
- The assertion is true. Mosaic cats do indeed display patches of different colors due to the expression of different alleles of the same gene in different cells.

4. **Evaluating the Truth of the Reason:**
- The reason is also true. The presence of orange and black patches can be explained by the suppression of the respective genes in different skin cells, leading to the observed phenotype.

5. **Determining the Relationship Between Assertion and Reason:**
- Since both the assertion and the reason are true, and the reason correctly explains the assertion (the patches are due to the suppression of the respective genes in different regions), we conclude that the reason is a correct explanation of the assertion.

6. **Final Conclusion:**
- Therefore, the correct answer is that both the assertion and the reason are true, and the reason is the correct explanation of the assertion.

**Final Answer:**
Both A and R are true, and R is the correct explanation of A.

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