Susan L. Elrodhas degrees in biological sciences from California State University, Chico (B.S., 1986) and genetics from the University of California, Davis (Ph.D., 1995). Graduate work was followed by a postdoctoral fellowship at Novozymes Biotech, Inc., in Davis, California. Her research is focused on the molecular genetics of yeast and filamentous fungal systems, with a particular interest in industrial and environmental applications. She holds three patents and has published in the area of gene cloning and protein expression in Aspergillus oryzae. She has been an assistant professor in the Biological Sciences Department at California Polytechnic State University, San Luis Obispo, since… 1997, where she teaches introductory microbiology, industrial microbiology and biotechnology, molecular genetics, bioinformatics, and the history of biology.William D. Stansfieldhas degrees in Agriculture (B.S., 1952), Education (M.A., 1960), and Genetics (M.S., 1962; Ph.D., 1963; University of California at Davis). His published research is in immunogenetics, twinning, and mouse genetics. From 1957 to 1959 he was an instructor in high school vocational in agriculture. He was a faculty member of the Biological Sciences Department of California Polytechnic State University from 1963 to 1992 and is now Emeritus Professor. He has written university-level textbooks in evolution and serology/immunology, and has coauthored a dictionary of genetics.