Demosthenes had five triremes and their complements of soldiers as a garrison, and was reinforced by 40 hoplites from a Messenian ship that happened to stop at Pylos.
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.
The lacZ gene, one of three genes in the lac operon of E. coli, codes for the enzyme-galactosidase that hydrolyses the disaccharide lactose to galactose and glucose. In E. coli the Î²-galactosidase protein is a tetramer, consisting of four identical polypeptides, each 1,021 amino acids long.