He spent three years in post-graduate work at Yale University in the laboratories of Professors Edward Adelberg and Bruce Carlton , then became an assistant professor at the University of California , San Francisco and a Professor of Biochemistry from 1976 to 1991 , where he discovered that genes from bacteria could be combined with genes from eukaryotes .
Boyer was a Professor of Biochemistry from 1976 to 1991 , where he discovered that genes from bacteria could be combined with genes from eukaryotes .