Genetic studies on Jews related they were through IBD. Individuals within the Ashkenazi, Sephardi, and Mizrahi groups shared high levels of IDB, roughly equivalent to that of fourth or fifth cousins. All three groups shared many genetic features, suggesting a common origin dating back more than 2,000 years. The study did find that all three Jewish groups did show various signs of admixture with non Jews, with the genetic profiles of Ashkenazi Jews indicating between 30% and 60% admixture with Europeans, although they clustered more closely with Sephardi and Mizrahi Jews. In July 2010, Bray et al., using SNP microarray techniques and linkage analysis,
Ethnoreligious group ethnoreligious groups are traditional Anabaptist groups like the Old Order Amish, the Hutterites, the Old Order Mennonites and traditional groups of German speaking Mennonites from Russia, like the Old Colony Mennonites. All these groups have a shared German background, a shared German dialect as their every day language (Pennsylvania German, Hutterisch, Plautdietsch) and a shared version of their Anabaptist faith, a shared history of several hundred years and they have accepted very few outsiders into their communities in the last 250 years. Modern proselytizing Mennonite groups, like e.g. the Evangelical Mennonite Conference whose members have lost their shared ancestry, their