Andy is the Jacob Gould Schurman Professor of Population Genetics in the Department of Molecular Biology and Genetics and a Nancy and Peter Meinig Family Investigator. He received a B.S. in Biology and Applied Mathematics at Brown University in 1976, and a Ph.D. in Population Genetics at Stanford University in 1980. He did postdoctoral work at Arizona State University and the University of Aarhus, Denmark, and a sabbatical at the University of California at Davis. Prior to joining the Cornell faculty in 2002, he was a professor in the Department of Biology at Penn State University.