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GK QUESTION#3716

Which of the following enzymes are essential of DNA replication in an animal cell?

  1. AReverse transcriptase, RNA polymerase, Ligase
  2. BReverse transcriptase, DNA polymerase, DNA primase
  3. CTopoisomerase, DNA ligase, DNA polymerase, DNA primaseCorrect answer
  4. DReverse transcriptase, DNA polymerase, Ligase
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Answer

C. Topoisomerase, DNA ligase, DNA polymerase, DNA primase

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Explanation

DNA replication requires DNA polymerases to synthesize DNA, primase to make primers, ligase to join discontinuous fragments and topoisomerases to manage DNA topology. Reverse transcriptase is not a general requirement for copying an animal-cell genome.

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