The researchers are continuing and expanding their studies particularly of the Ashkenazi community.They are hoping that by examining the DNA markers in Jewish populations from different parts of Europe, they will be able to infer the major historical and demographic patterns in Ashkenazi populations.This research confirms the common ancestry and common geographical origin of world Jewry.Jewish men from communities which developed in the Near East –- Iran, Iraq, Kurdistan, Yemen -- and European Jews have very similar, almost identical genetic profiles.By studying the genetic signatures of various groups, comparisons can be made to determine the genetic relationships between the groups.
Since the Jews first settled in Europe more than 50 generations ago, the intermarriage rate was estimated to be only about 0.5% in each generation."Despite their long-term residence in different countries and isolation from one another, most Jewish populations were not significantly different from one another at the genetic level. Nat'l Academy of Science, May 9, 2000) The basis of this new field of population research is the study of the Y-chromosome, which is passed virtually unchanged from father to son.The results support the hypothesis that the paternal gene pools of Jewish communities from Europe, North Africa and the Middle East descended from a common Middle Eastern ancestral population, and suggest that most Jewish communities have remained relatively isolated from neighboring non-Jewish communities during and after the Diaspora." (M. The rare mutations -– which are changes in the non-coding portion of its DNA –- can serve as markers, which can distinguish peoples.Recently published research in the field of molecular genetics –- the study of DNA sequences –- indicates that Jewish populations of the various Diaspora communities have retained their genetic identity throughout the exile.Despite large geographic distances between the communities and the passage of thousands of years, far removed Jewish communities share a similar genetic profile.Other scholars reject the German origin of Yiddish.