Thymine (T) is one of the four nucleotide bases in DNA, with the other three being adenine (A), cytosine (C) and guanine (G). Within a double-stranded DNA molecule, thymine bases on one strand pair with adenine bases on the opposite strand. The sequence of the four nucleotide bases encodes DNA’s information.
Thymine. Thymine, like several other nucleotides, also is used in metabolism, and has more functions than just being in DNA.
Division of Genomics and Society