Regions, Genetic Study of Mice (IMAGE) Rice University Caption The species used in a Rice University genetic study of mice were collected from 15 locations in Europe and Africa. The green region indicates the range of Mus spretus, the Algerian mouse, while the blue region indicates the range of Mus musculus domesticus, the common European house mouse, which also occupies the green region and beyond. Algerian mouse samples were obtained in Puerto Real (purple diamond). The study showed at least three instances of introgressive hybridization between the two species. Credit Kohn and Nakhleh Labs/Rice University 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.