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Ruth Bader Ginsburg
DNA ties Ashkenazi Jews to group of just 330 people from Middle Ages
DNA ties Ashkenazi Jews to group of just 330 people from Middle Ages

All of the Ashkenazi Jews alive today can trace their roots to a group of about 330 people who lived 600 to 800 years ago. So says a new study in the journal Nature Communications. An international team of scientists sequenced the complete genomes of 128 healthy Ashkenazi Jews and compared each of those sequences with the others, as well as with with the DNA of 26 Flemish people from Belgium. Their analysis allowed them to trace the genetic roots of this population to a founding group in the Middle Ages. “Ashkenaz” in Hebrew refers to Germany, and Ashkenazi Jews are those who originated in Eastern Europe. (Sephardic Jews, by contrast, are from the areas around the...

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