adenine ( A ), thymine ( B ), cytocine ( C ) and guanine (G ) â€“ ( the alphabet of life ) , interact with one another in specific ways, i.e. the nucleotides put ( written ) into in a sequence ( e.g GATCATCCG, etc ) determine how a living thing functions.
Constituent components of DNA and RNA. Each nucleotide has three parts: a nitrogen-containing base, a five-carbon sugar, and a phosphate group. The bases are adenine, cytosine, guanine, thymine (in DNA), and uracil (in RNA).
a type of chemical compound consisting of a nucleoside linked to a phosphate group