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GATE BT 2022 | Question: 36

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Adenine can undergo a spontaneous change to hypoxanthine in a cell, leading to a $\text{DNA}$ base pair mismatch. The $\text{CORRECT}$ combination of enzymes that are involved in repairing this damage is

  1. Nuclease, $\text{DNA}$ polymerase, $\text{DNA}$ ligase
  2. Nuclease, $\text{DNA}$ ligase, helicase
  3. Primase, $\text{DNA}$ polymerase, $\text{DNA}$ ligase
  4. Primase, helicase, $\text{DNA}$ polymerase
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