It is said that DNA provides the instructions for life itself. But how do four molecules repeated billions of times along the length of the human genome translate into a human being? The key is a process called protein synthesis, the mechanism by which DNA is translated into proteins. Proteins are the vital molecules that create all of the structures and direct all of the functions needed to sustain life. This interactive feature from the A Science Odyssey web site helps unlock the secrets of DNA and protein synthesis.