Site-Specific Recombination Mechanisms Quiz
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Questions and Answers

What is the enzyme responsible for conducting DNA breakage and joining reactions needed for transposable elements to move?

  • Integrase
  • Reverse transcriptase
  • RNA polymerase
  • Transposase (correct)
  • Which type of transposons contain long terminal repeats (LTRs) in their structure?

  • Nonretroviral retrotransposons
  • Non-LTR retrotransposons
  • Retroviral-like retrotransposons (correct)
  • DNA-only transposons
  • In which class of transposons does the translocating DNA segment get directly cut out of the donor DNA and joined to the target site by a transposase?

  • Retroviral-like retrotransposons
  • Non-LTR retrotransposons
  • DNA-only transposons (correct)
  • Nonretroviral retrotransposons
  • Which enzyme transcribes the RNA molecule back into DNA in retroviral-like retrotransposons?

    <p>Reverse transcriptase</p> Signup and view all the answers

    What is the name of the enzyme that catalyzes the insertion reaction in nonretroviral retrotransposons?

    <p>Integrase</p> Signup and view all the answers

    Which element contains a leucine zipper (LZ) domain and a C-terminal nucleic acid binding domain?

    <p>ORF1</p> Signup and view all the answers

    What is the main characteristic of site-specific recombination?

    <p>Exchange of genetic material between DNA strands with sequence homology</p> Signup and view all the answers

    How long are the short DNA strands involved in site-specific recombination?

    <p>30-200 nucleotides</p> Signup and view all the answers

    Which of the following is true about transpositional site-specific recombination?

    <p>Involves genetic elements moving to different genome locations</p> Signup and view all the answers

    How do site-specific recombinases catalyze the rearrangement of DNA?

    <p>Recognizing and binding to short DNA sequences</p> Signup and view all the answers

    What happens during conservative site-specific recombination?

    <p>DNA exchange occurs between segments with sequence homology</p> Signup and view all the answers

    What is an outcome of the integration of bacteriophage DNA into a host genome?

    <p>Alteration of gene order in the host genome</p> Signup and view all the answers

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