DNA sequence





A DNA sequence is a succession of letters representing the primary structure
of a real or hypothetical DNA molecule or strand. The possible letters are
A, C, G, and T, representing the four nucleotide subunits of a DNA strand,
and typically these are printed abutting one another without gaps, as in the
sequence AAAGTCTGAC. A succession of any number of nucleotides greater than
four is liable to be called a sequence. A sequence may be sense or
anti-sense (more at DNA).