Fritz Roth, University of Toronto (IMAGE) University of Toronto Caption By testing the effects of human mutations in yeast, Professor Fritz Roth was able to identify harmful changes in the DNA better than leading algorithms. Credit University of Toronto Usage Restrictions None 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.