Ancestry composition (“myorigins” on ftdna.com):
Familytreedna.com screens your DNA and compare it to patterns that can only be found in the DNA from Ashkenazi and Sephardic groups. Under the section myorigins from ftdna.com, you will be able to see whether your DNA has an ethnic makeup percentage coming from Ashkenazi or Sephardic groups. If you do this test, you will get the percentage of Ashkenazi or Sephardic whatever the lineage (paternal or maternal). To get this results, you have to order the offer: “family finder” at familytreedna.com.
The maternal lineage
As you may know, the Jewish heritage comes from the maternal lineage. People from Ashkenazi descents are very likely to have the mtDNA haplogroup N1b, K1a1b1a, K1a9 or K2a2a. Meanwhile, only 50% of Ashkenazi Jews have an N1b, K1a1b1a, K1a9 or K2A2 mtDNA haplogroup. I don’t know the mtDNA haplogroups for Sephardic Jews, please leave a comment if you have any links to a study.
To know your a possible Jewish maternal haplogroup, you must order the mtDNA test at familytreedna.com
The Jewish DNA project
Then, you can join the Jewish DNA project to compare your mtDNA and your Y DNA results with other familytreedna.com users.