[2013] Most Ashkenazi Jews are genetically Europeans, surprising study finds

Though the finding may seem intuitive, it contradicts the notion that European Jews mostly descend from people who left Israel and the Middle East around 2,000 years ago. Instead, a substantial proportion of the population originates from local Europeans who converted to Judaism, said study co-author Martin Richards, an archaeogeneticist at the University of Huddersfield in England.