Case Workbook for Human Genetics

Biology

Quiz 9 :

Dna Structure and Replication

Quiz 9 :

Dna Structure and Replication

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What does 3' to 5' refer to in DNA structure?
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3' and 5' refer to locations of carbons in deoxyribose.

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How does the pairing of pyrimidines and purines contribute to DNA's conformation?
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Pyrimidine and purine pairing makes the width of the molecule constant, enabling it to wind into a sleek double helix.

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In Figure 9.12, why are the bases in the right strand upside down?
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Bases on one side are upside down to indicate that they are antiparallel.

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How did Hershey and Chase, and Meselson and Stahl not only demonstrate that a particular hypothesis was correct, but that alternate hypotheses were not?
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Why are genes distinguished by bases but not by the sugar-phosphate backbone?
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