What does the sequence of nucleotides in DNA code for?

Individual codons code for specific amino acids. A gene is a sequence of nucleotides along a DNA strand - with 'start' and 'stop' codons and other regulatory elements - that specifies a sequence of amino acids that are linked together to form a protein ... Each amino acid can be coded for by more than one codon.

The sequence of nucleotides in DNA codes for the sequence and type of amino acids to be put together to make specific proteins.