John Sedat is Professor Emeritus in Biochemistry and Biophysics at the University of California, San Francisco. He received his Ph.D. in Biology from Caltech in Pasadena, CA in 1970 followed by postdoctoral study under Fred Sanger at the MRC in Cambridge, England. Subsequently, he spent approximately a year at the Hebrew University at Hadassah in Jerusalem, Israel where the Drosophila and chromosome study started. Several years at Yale followed, and he has been at UCSF since 1977.