​Adenine
Definition
Adenine (A) is one of the four nucleotide bases in DNA, with the other three being cytosine (C), guanine (G) and thymine (T). Within a double-stranded DNA molecule, adenine bases on one strand pair with thymine bases on the opposite strand. The sequence of the four nucleotide bases encodes DNA’s information.
Narration
Adenine. Adenine, pairing with T in DNA, is usually represented as bonding with two hydrogen bonds, holding the DNA together.
