Arno Motulsky, University of Washington (IMAGE) University of Washington Caption This is Dr. Arno Motulsky, a pioneering figure in medical genetics, who helped solve the 100-year old genetic puzzle of pentosuria. Credit University of Washington Usage Restrictions For news media, educational institutions and museum use only License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.