NEET Biology question

Which of the following tools of recombinant DNA technology is incorrectly paired with its use?

(A)EcoRI - Production of sticky ends
(B)DNA ligase - Multiplication of rDNA moleculesCorrect
(C)Ori - Control of copy number of linked DNA
(D)Selectable marker - Identification of transformants

Answer: (B)

Solution

EcoRI genuinely produces sticky ends, ori genuinely controls the copy number of linked DNA, and a selectable marker genuinely identifies transformants, whereas DNA ligase's actual role is sealing (joining) DNA

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Question ID VK-125231