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Question

The restriction enzyme is:


  1. Are required in vectorless direct gene transfer

  2. Endonuclease which cleaves DNA at specific sites

  3. Make DNA complementary to an existing DNA or RNA

  4. Cut or join DNA fragments


Solution

The correct option is B

Endonuclease which cleaves DNA at specific sites


A restriction enzyme or restriction endonuclease is an enzyme that cleaves DNA into fragments at or near specific recognition sites within the molecule known as restriction sites. These enzymes are found in bacteria and archaea and provide a defense mechanism against invading viruses.

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