DNA Replication Accuracy Quiz
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Questions and Answers

What is the frequency of mismatched bases incorporated into new DNA during the process of replication?

  • About 10−4 to 10−5 (correct)
  • Exactly one error per billion nucleotides
  • Less than one error per billion nucleotides
  • About 10−2 to 10−3

    • What is the main role of mismatch-repair enzymes in DNA replication?

  • To prevent any errors from occurring in DNA replication
  • To increase the error rate in DNA replication
  • To cut out a section of the newly synthesized strand and fill the gap with new nucleotides (correct)
  • To create unpaired loops in the DNA

    • How are incorrectly paired bases detected and corrected in DNA?

  • By mismatch-repair enzymes (correct)
  • By proofreading enzymes
  • By DNA polymerases
  • By replication enzymes

    • What must mismatch repair have in order to work effectively?

    <p>A way to distinguish between old and new strands of DNA</p> Signup and view all the answers

    What is the purpose of filling the gap with new nucleotides in DNA replication?

    <p>To maintain the integrity of the DNA sequence</p> Signup and view all the answers

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