Michael Hammer is an associate professor and research scientist (Arizona Research Laboratories) at the University of Arizona with joint appointments in anthropology, ecology, and evolutionary biology. Dr. Hammer is a population geneticist who studies patterns of genetic variation in modern-day populations to gain insights into the evolutionary origins of Homo sapiens. His laboratory is currently constructing a novel re-sequencing database of loci throughout the genome to understand better the evolutionary processes that shape human variation and to test models of human origins.