On the exclusivity of hydrogen-bonded pairing between the Watson-Crick complementary bases.
D000225:Adenine; D055598:Chemical Phenomena; D002621:Chemistry; D003596:Cytosine; D006147:Guanine; D009696:Nucleic Acids; D013941:Thymine
D009696:Nucleic Acids; D006147:Guanine; D003596:Cytosine; D000225:Adenine; D013941:Thymine