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Base pairing

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Base pairing

(Science: molecular biology) The specific hydrogen bonding between purines and pyrimidines in double stranded nucleic acids.

in dna the pairs are adenine and thymine and guanine and cytosine, while in rna they are adenine and uracil and guanine and cytosine.

base pairing leads to the formation of a dna double helix from two complementary single strands.