Key term for Edexcel GCSE Biology, used in Selective Breeding and Genetic Engineering.
The specific pairing of nitrogenous bases (Adenine with Thymine, Cytosine with Guanine) via hydrogen bonding.
Complementary base pairing appears in Edexcel GCSE Biology revision content for Natural Selection and Genetic Modification, especially Selective Breeding and Genetic Engineering and Stages of Genetic Engineering.
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