Garden, City, NY: Doubleday & Company, Inc., 1966. First edition and first printing. Hardcover. 242 pages. An informative book on the ever topical subject of genetics from George and Muriel Beadle. George Beadle shared the 1958 Nobel Prize in Physiology/Medicine with Edward Tatum. A near fine copy with some minor wear in a very good dust jacket that is lightly soiled, with some small edge tears, minor wear and a small sticker shadow to the front panel. Signed by both Geoge and Muriel Beadle on the second endpaper.