Marshall Warren Nirenberg is best known for deciphering the portion of DNA (deoxyribonucleic acid) that is responsible for the synthesis of the numerous protein molecules which form the basis of living cells. His research has helped to unravel the DNA genetic code, aiding, for example, in the determination of which genes code for certain hereditary traits. For his contribution to the sciences of genetics and cell biochemistry, Nirenberg was awarded the 1968 Nobel Prize in physiology or medicine with Robert W. Holley and Har Gobind Khorana.

Nirenberg was born in New York City on April 10, 1927, and moved to Florida with his parents, Harry Edward and Minerva (Bykowsky) Nirenberg, when he was ten years old. He earned his B.S. in 1948 and his M.Sc. in biology in 1952 from the University of Florida. Nirenberg's interest in science extended beyond his formal studies. For two of his undergraduate years he worked...