 Fink taught a course in the Molecular Biology of Yeast at Cold Spring Harbor Laboratory for 16 years.Many of these students as well as his university students went on to have successful careers in molecular biology.In 1977, Fink and his students Albert Hinnen and Jim Hicks, discovered a method to transform yeast cells, a procedure that allows scientists to introduce genetic material (DNA) from another organism into living yeast cells so that the expression and hereditability of the introduced DNA can be studied.