Greenspan had both Nitz cousins in California and had discovered someone in Argentina with the same ancestral surname and the same ancestral location in Eastern Europe. These were a study by University of Arizona researchers showing that many Cohen men from both Ashkenazic and Sephardic groups share the same Y-chromosome and a study that showed that male descendants of a paternal uncle of US President Thomas Jefferson (who presumably shared his Y-chromosome) and male-line descendants of his freed slave Sally Hemings shared the same Y-chromosome and a recent common ancestry. When faced with a roadblock in his work, he remembered two cases of genetics being used to prove ancestry that had recently been covered by the media. He began work on his mother's Nitz lineage. In 1999, Greenspan had entered semi-retirement and was working on his family history. History Concept and founding (2000–2002) įamilyTreeDNA was founded based on an idea conceived by Bennett Greenspan, a lifelong entrepreneur and genealogy enthusiast. FamilyTreeDNA as a division of Gene by Gene were acquired by MYDNA, Inc., an Australian company, in January 2021. In Europe, it is the most common also for autosomal DNA. With a database of more than two million records, it is the most popular company worldwide for Y-DNA and mitochondrial DNA, and the fourth most popular for autosomal DNA. FamilyTreeDNA offers analysis of autosomal DNA, Y-DNA, and mitochondrial DNA to individuals for genealogical purpose. FamilyTreeDNA is a division of Gene by Gene, a commercial genetic testing company based in Houston, Texas.
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