Assertion. The ability of certain DNA sequence in the genome to move from one site to another, without any sequence relationship is called transposition
Reason. The message from nuclear DNA for the synthesis of specific cytoplasmic protein is carried by m-RNA

Options

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

Answer

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

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that "The ability of certain DNA sequences in the genome to move from one site to another, without any sequence relationship is called transposition."
- This is true. Transposition refers to the process by which specific DNA sequences, known as transposons or "jumping genes," can move around within the genome. They can insert themselves into different locations without requiring a homologous sequence.

2. **Understanding the Reason**:
- The reason states that "The message from nuclear DNA for the synthesis of specific cytoplasmic protein is carried by m-RNA."
- This is also true. In the process of gene expression, messenger RNA (mRNA) is synthesized from DNA in the nucleus and then transported to the cytoplasm where it directs the synthesis of proteins.

3. **Analyzing the Relationship**:
- While both the assertion and reason are true, the reason does not explain the assertion. The assertion discusses the movement of DNA sequences, while the reason discusses the role of mRNA in protein synthesis. They are related to different aspects of molecular biology.

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

### Final Answer:
Both the assertion and reason are true, but the reason is not a correct explanation of the assertion.