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    Question :
    What are the complementary base-pairing rules for biology?
    Category Biology Interview Questions
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    Added on 9/23/2009
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    In DNA, Adenine bonds with Thymine, Cytosine bonds with Guanine. In RNA, Thymine is replaced with Uracil (bases capitalized for easy emphasis/reference, not grammar.)

    Purines and Pyrimidines are two families of Nitrogenous bases.

    In DNA:

    Adenine and Guanine: Purines

    Cytosine and Thymine: Pyrimidines

    Adenine bonds with Thymine and Guanine bonds with Cytosine.

    A&T have 2 hydrogen bonds and G&C have 3 hydrogen bonds.

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