Codon

Also known as trinucleotides. A codon is made up of three nucleotides found in DNA or mRNA, and codes for one specific amino acid. The order of these three nucleotides is unique and vitally important in the coding of its amino acid.

An amino acid can be back-translated from a codon sequence by using the codon wheel.

In some instances, there can be more than one codon which corresponds to the same amino acid.