An example of genetic homology: a comparison of a short amino acid sequence within the p53 protein f

This figure compares a short region of the p53 protein, which plays a role in preventing cancer. Amino acids are represented by three-letter abbreviations. The orange-coloured amino acids in the sequences are identical to those in the human sequence. The numbers in the right column indicate the percentage of amino acids within the whole p53 protein that is identical with the human p53 protein, which is 393 amino acids long. For example, 95% of the amino acids, or 373 of 393, are identical between the p53 sequence found in humans and that in Rhesus monkeys.