A: Restriction enzymes belong to a larger class of enzymes called nucleases.
R: Each restriction enzymes recognises sequence in the DNA.

Options

A. If both Assertion & Reason are true and the reason is the correct explanation of the assertion
B. If both Assertion & Reason are true but the reason is not the correct explanation of the assertion
C. If Assertion is true statement but Reason is false
D. If both Assertion and Reason are false statements

Answer

**Step-by-Step Text Solution:**

1. **Understanding the Assertion:**
- The assertion states that "Restriction enzymes belong to a larger class of enzymes called nucleases."
- Nucleases are enzymes that cleave the chains of nucleotides in nucleic acids (DNA and RNA).

2. **Understanding the Reason:**
- The reason states that "Each restriction enzyme recognizes a sequence in the DNA."
- Restriction enzymes are known for their ability to recognize specific sequences of nucleotides in DNA, often referred to as palindromic sequences.

3. **Connecting the Assertion and Reason:**
- Since restriction enzymes are indeed a type of nuclease, the assertion is true.
- Additionally, the reason correctly explains how restriction enzymes function by recognizing specific DNA sequences, which is essential for their role in cutting DNA.

4. **Conclusion:**
- Both the assertion and the reason are true, and the reason provides a correct explanation for the assertion.
- Therefore, the correct answer is that both the assertion and reason are true, and the reason is the correct explanation of the assertion.

**Final Answer:**
Both the assertion and reason are true, and the reason is the correct explanation of the assertion.

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