The correct option is (D) Cut dna at specific sites.
A restriction enzyme, an isolated bacterial protein, cleaves DNA at particular sequence-specific places to produce DNA fragments with a known sequence at each end.
What mechanisms do restriction enzymes use?
- For many laboratory procedures, including genetic engineering and recombinant DNA technology, restrictions enzymes are essential.
- Restrictions enzymes are used by bacteria to destroy viruses by targeting viral DNA and cleaving it into inactive fragments.
- Like all other enzymes, a restriction enzyme works through shape-to-shape matching.
- The enzyme wraps around the DNA and breaks both DNA strands when it comes into contact with a DNA sequence whose shape matches a recognition site on the enzyme.
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