Marvin H. Caruthers Born (1940-02-11) February 11, 1940 Des Moines, Iowa Nationality American Alma mater Iowa State University, Northwestern University Known for DNA Synthesis Scientific career Fields Biochemistry Institutions University of Colorado Boulder Thesis The Synthesis of Oligothymidylate Derivatives on Insoluble Polymer Supports (1968) Doctoral advisor Robert L. Letsinger Other academic advisors Har Gobind Khorana, George Rathmann