Type - II restriction enzymes

Options

A. recognize the specific sequence and cleave DNA at that specific sequence
B. do not recognize or cleave the specific sequence
C. recognize specific sequence but cleave non-specific sequence.
D. None of the above

Answer

### Step-by-Step Solution:

1. **Understanding Type II Restriction Enzymes**:
- Type II restriction enzymes are a class of enzymes that are widely used in molecular biology, particularly in gene cloning and DNA analysis.

2. **Function of Type II Restriction Enzymes**:
- These enzymes recognize specific DNA sequences and cleave the DNA at or near these recognition sites. This is crucial for various applications, including DNA fragmentation and creating reproducible DNA fragments for analysis.

3. **Evaluating the Options**:
- **Option A**: Recognizes the specific sequence and cleaves the DNA at the specific sequence.
- **Option B**: Do not recognize or cleave the specific sequence.
- **Option C**: Recognizes a specific sequence but cleaves a non-specific sequence.
- **Option D**: None of the above.

4. **Determining the Correct Answer**:
- Based on the function of Type II restriction enzymes, they indeed recognize specific sequences and cleave the DNA at those sites. Therefore, **Option A** is the correct answer.

### Final Answer:
**Option A: Recognizes the specific sequence and cleaves the DNA at the specific sequence.**

---