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Genetic code. The genetic code is the set of rules by which information encoded in genetic material (DNA or RNA sequences) is translated into proteins (amino acid sequences) by living cells. Specifically, the code defines a mapping between tri-nucleotide sequences called codons and amino acids; every triplet of nucleotides in a nucleic acid sequence specifies a single amino acid.
Best Answer: DNA has four letters, ACGT. strings of these letters code for strings of amino acids-of which we have 20-these 20 amino acids make up all the proteins in our bodies. DNA is the repository for all the data needed to make these amino acids. using RNA as an intermediate, each string of 3 DNA letters codes for one amino acid. long strings of amino acids hooked together make up proteins.