About the Author
David Shier teaches at Washtenaw Community College in Ann Arbor, Michigan and is the biology department chair. He received his Ph.D. in physiology from the University of Michigan.
Jackie Butler is chair of the Department of Science at Grayson County College. She did her graduate studies in Neuroscience at the University of North Texas.
Ricki Lewis, well-known author of Life, Beginnings of Life, and Human Genetics, is currently an instructor at the University of Albany. She received her Ph.D. in genetics from Indiana University. She is practicing genetics counselor for Women's Medical Health Care in New York.