Question

Restriction enzymes ______.

Options

• And endonucleases, which cleaves DNA at specific sites

• Make DNA complementary to an existing DNA or RNA.

• Cut or join DNA fragments

• Are required in Vector less direct gene transfer

Answer 1

Restriction enzymes and endonucleases, which cleaves DNA at specific sites.

Explanation:

Restriction enzyme, also known as restriction endonuclease, is a bacterial protein that cleaves DNA at certain locations. Restriction enzymes cut foreign DNA in the bacterial cell, removing invading organisms.