The nitrogenous bases include cytosine, thymine, adenine, and guanine. Cytosine forms three hydrogen bonds with guanine and thymine forms two hydrogen bonds with adenine. This is referred to as complementary base pairing.
The nitrogenous bases include cytosine, thymine, adenine, and guanine. Cytosine forms three hydrogen bonds with guanine and thymine forms two hydrogen bonds with adenine. This is referred to as complementary base pairing.