(a) What are ‘molecular scissors’ ? Give one example.

Explanation

### Step-by-Step Solution:

1. **Definition of Molecular Scissors**:
- Molecular scissors refer to enzymes that can cut DNA at specific locations. These enzymes are crucial in molecular biology for manipulating DNA.

2. **Identification of Molecular Scissors**:
- The most common type of molecular scissors are known as restriction enzymes or restriction endonucleases.

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