A codon chart is a graphical representation of the genetic code, which maps each of the 64 possible triplets or codons to a sequence of nucleotides. It consists in two parts:
Each row and column represent “codons”, i.e. groups of three bases (for this purpose, A to U are called “bases”). The first line from left to right on the chart then represents the sequence ATTTGCGT in DNA, reads so-called 5′→3′.
The symbols along each row stand for different amino acids; one letter per symbol with T as stop signal (or translation termination).
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