In genetic engineering , restriction enzymes are used for cutting

Options

A. Bacterial DNA only
B. Eukaryotic DNA
C. Viral DNA
D. Any DNA fragment

Answer

**Step-by-Step Solution:**

1. **Understanding Restriction Enzymes**:
- Restriction enzymes, also known as restriction endonucleases, are proteins that can cut DNA at specific sequences. They are crucial tools in genetic engineering.

2. **Function of Restriction Enzymes**:
- These enzymes recognize specific nucleotide sequences in the DNA, known as restriction sites, and cleave the DNA at or near these sites.

3. **Types of DNA that Can Be Cut**:
- Restriction enzymes can cut various types of DNA, including:
- Bacterial DNA
- Eukaryotic DNA
- Viral DNA

4. **Conclusion**:
- Since restriction enzymes can cut any DNA fragment regardless of its origin (bacterial, eukaryotic, or viral), the correct answer to the question is that they can cut "any DNA fragment."

**Final Answer**: Any DNA fragment.

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