Admixture. (IMAGE) University of Tokyo Caption According to this study, regional differences in the historic admixing of the population have led to gradations in the genetic and physical characteristics of modern Japanese. Credit 2023 Watanabe et al Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. No derivatives or adaptations of the work are permitted. License CC BY-NC-ND 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.