Marshall Warren Nirenberg (1927–2010)

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Science  19 Feb 2010:
Vol. 327, Issue 5968, pp. 972
DOI: 10.1126/science.1187484

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Of all the astonishing advances and discoveries of 20th-century biology, few compare to the elucidation of the genetic code in terms of importance and universal impact. The code is the Rosetta Stone of life, specifying how genetic information in the form of a linear array of four nucleotides in RNA directs the incorporation of each of the 20 amino acids into proteins.