NEET Biology question

Restriction endonucleases are:

(A)Present in mammalian cell for degradation of DNA when the cell dies
(B)Synthesized by bacteria as part of their defence mechanismCorrect
(C)Used for in vitro DNA synthesis
(D)Both (B) and (C)

Answer: (B)

Solution

Restriction endonucleases are not found in mammalian cells and they do not synthesize DNA (that is the role of DNA polymerase) but instead cut it, so option (c) is false and

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Question ID VK-124845