Since Jews have been in Europe for at the most 2,000 years and different groups came at different times. Looking at how their haplogroups are distributed in Europe and the Near east today does seem like a good way to figure out if it is European or Near eastern. European Jews in austomal DNA definitely have a lot of Near eastern(click here). And since Jewishness is passed down from the mother why would 80% of their maternal lineages be European. Also shouldn't there be non Jewish Europeans with Jewish blood and this could add some Near eastern Y DNA and mtDNA haplogroups and austomal DNA in Europe. It would be really cool if they could find proof of people in King David's, Abraham, Moses, etc. lineage and isn't there some evidence they found people in Aarons Moses's brother lineage. I think there is a lot to learn about Genetics in the Near east it seems everything in ancient DNA and Genetics right now is about Europe. I wonder how much the Arab Muslims in the middle ages really changed and even though like Iraqi people I know claim to be Arab's(a lot of Muslims want to) they mainly descend from Babylonians or whoever.