NEET Biology question

Recombinant DNA is achieved by cleaving the pro-DNAs by: [AIPMT 1998]

(A)Ligase
(B)Restriction endonucleaseCorrect
(C)Primase
(D)Exonuclease

Answer: (B)

Solution

Ligase seals DNA fragments rather than cutting them, primase synthesizes RNA primers, and exonucleases remove nucleotides from DNA ends rather than cutting at specific internal sites,

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Question ID VK-125174