DNA sequence. Computer screen display showing the colourcoded peaks of spectra showing genetic sequences. The peaks correspond to the nucleotide bases in a DNA (deoxyribonucleic acid) sample. The precise sequence of the bases forms a genetic code that is unique for every individual. DNA controls the development and functioning of every living organism. The sequence of letters below the peaks are also colourcoded, and match the four bases found in DNA: adenine (A), thymine (T), cytosine (C) and guanine (G, not seen).
