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See complementary base pairing.
The phenomenon, based on chemical complementarity, whereby adenine (A) binds to uracil (U) or thymine (T), and guanine (G) to cytosine (C), in nucleic acids.
The pairing of specific nitrogenous bases between complementary strands of DNA. For example, adenine is always paired with thymine and guanine with cytosine.
A,T,C, and G are molecular building blocks of DNA that only continue in specific "base" pairs, e.g., A only pairs with T, and C only pairs with G.
Linking of the complementary pair of polynucleotide chains of nucleic acids by means of hydrogen bonds between complementary purine and pyrimidine bases, adenine with thymine or uracil, cytosine with guanine.
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