Unit 4: Genetics - DNA Replication Overview
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Questions and Answers

During which phase of the cell cycle does DNA replication take place?

  • M phase
  • G2 phase
  • G1 phase
  • S phase (correct)
  • What enzyme is responsible for unzipping the DNA strands at the origins of replication?

  • Helicase (correct)
  • DNA polymerase
  • RNA polymerase
  • DNA ligase
  • In which direction does DNA replication occur?

  • 5' to 3' (correct)
  • Random direction
  • 3' to 5'
  • Bidirectional
  • Where are nucleotides added in the leading strand during DNA replication?

    <p>3' end</p> Signup and view all the answers

    What does DNA ligase do at the end of DNA replication?

    <p>Attaches okazaki fragments together</p> Signup and view all the answers

    Why is DNA replication considered 'semiconservative'?

    <p>Each molecule contains one original DNA strand and one new strand</p> Signup and view all the answers

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