Nova – Week 14: Epigenetics & Frozen Frogs

10 Questions

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Questions and Answers
  • 1. 
    Identical twins _____.
    • A. 

      Come from the same egg

    • B. 

      Share the same genes

    • C. 

      Are – in effect – clones of one another

    • D. 

      All of the above

  • 2. 
    Dr. Jirtle has two “identical” mice – one _____ and one _____.
    • A. 

      Fat ... thin

    • B. 

      White ... brown

    • C. 

      With blue eyes ... with pink eyes

    • D. 

      (The two mice are identical in all respects.)

  • 3. 
    Apparently, a normal mouse weighs approximately _____ grams.
    • A. 

      15

    • B. 

      30

    • C. 

      45

    • D. 

      60

  • 4. 
    If a gene can be compared to a computer, then an epigenome can be compared to _____.
    • A. 

      The manufacturer of the computer

    • B. 

      The computer programmer

    • C. 

      Computer software

    • D. 

      A computer virus

  • 5. 
    Studies suggest that _____.
    • A. 

      As twins age their epigenetic differences accumulate

    • B. 

      Twins with different lifestyles have different epigenetic expressions

    • C. 

      Epigenetics can be influenced by what we eat and drink – or by smoking

    • D. 

      All of the above

  • 6. 
    Unlike other amphibians, _______ can survive being frozen solid.
    • A. 

      Poison dart frog

    • B. 

      Green tree frogs

    • C. 

      North American wood frogs

    • D. 

      Bullfrogs

  • 7. 
    When the frog is frozen there is no _____.
    • A. 

      Breathing

    • B. 

      Kidney function

    • C. 

      Heartbeat

    • D. 

      (There are no bodily functions at all.)

  • 8. 
    As it begins to freeze, the frog floods its circulatory system with a special type of “antifreeze” _____.
    • A. 

      Sugar

    • B. 

      Protein

    • C. 

      Enzyme

    • D. 

      Salt

  • 9. 
    The frozen frog can take as long as _____ to spontaneously resume bodily function.
    • A. 

      30 seconds

    • B. 

      20 minutes

    • C. 

      10 hours

    • D. 

      5 days

  • 10. 
    Apparently, the first thing on a freshly thawed frog’s mind is _____.
    • A. 

      Food

    • B. 

      Finding water

    • C. 

      Evading predators

    • D. 

      L’amour