Jewish diaspora included in the comparisons." Studies of autosomal DNA, which look at the entire DNA mixture, have become increasingly important as the technology develops. They show that Jewish populations have tended to form relatively closely related groups in independent communities, with most people in a community sharing significant ancestry in common. For Jewish populations of the diaspora, the genetic composition of Ashkenazi, Sephardi, and Mizrahi Jewish populations show a predominant amount of shared Middle Eastern ancestry. According to Behar, the most parsimonious explanation for this shared Middle Eastern ancestry is that it is "consistent with the historical formulation of the Jewish
Sephardi Hebrew of Hebrew in Mishnaic times (1st-2nd centuries), with the Sephardi pronunciation being derived from Judaean and the Ashkenazi from Galilean. The theory is supported by the fact that Ashkenazi Hebrew, like Samaritan Hebrew, has lost the distinct sounds of many of the guttural letters, and there are references in the Talmud to that as a feature of Galilean speech. Idelsohn ascribes the Ashkenazi (and, on his theory, Galilean) pronunciation of qamats gadol as to the influence of Phoenician: see Canaanite shift. During the Masoretes (8th-10th centuries), there were three distinct notations for denoting vowels and other details of pronunciation in