Assertion: The two strands in double strand helix structure of DNA are complementary to each other
Reason: Disulphide bonds are formed between SQPecific pairs of bases

Options

A. Both assertion and reason are correct statements, and reason is the correct explanation of the assertion
B. Both assertion and reason are correct statements, but reason is not the correct explanation of the assertion
C. Assertion is correct, but reason is wrong statement.
D. Assertion is wrong, but reason is correct statement.

Answer

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 "The two strands in the double-strand helix structure of DNA are complementary to each other."
- This is true because in DNA, the bases on one strand pair specifically with the bases on the other strand. Adenine (A) pairs with Thymine (T), and Cytosine (C) pairs with Guanine (G). This complementary base pairing is fundamental to the structure of DNA.

2. **Understanding the Reason**:
- The reason given is "Disulphide bonds are formed between specific pairs of bases."
- This statement is incorrect. In DNA, the bases are held together by hydrogen bonds, not disulfide bonds. Disulfide bonds are typically found in proteins and are formed between cysteine residues, not in the structure of DNA.

3. **Conclusion**:
- Since the assertion is true and the reason is false, we conclude that the assertion is correct, but the reason does not support the assertion.

### Final Answer:
- The assertion is true, and the reason is false.