NEET Biology question

'Restriction' in restriction enzyme refers to

(A)Cleaving of phosphodiester bond in DNA by the enzyme
(B)Cutting of DNA at a specific position onlyCorrect
(C)Prevention of the multiplication of bacteriophage in bacteria
(D)All of the above

Answer: (B)

Solution

The word "restriction" in "restriction enzyme" specifically denotes that the enzyme's cutting action is restricted (confined) to a defined recognition sequence, rather than cleaving DNA randomly — i.e., it cuts DNA only at specific, sequence-determined positions. This is precisely what option (b) states. Option (a),

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Question ID VK-125292