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Why purine-purine and pyrimidine-pyrimidine base pairs

  1. Nov 20, 2008 #1
    In DNA, the base pairs are on the inside of the heli. Eplain why purine-purine and pyrimidine-pyrimidine base pairs do not occur, only purine-pyrimidine base pairs?
     
  2. jcsd
  3. Nov 21, 2008 #2

    chemisttree

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    Re: chem

    Review Watson-Crick base pairing.
     
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