Jewish diaspora evidence that about 40% of Ashkenazi Jews originate maternally from just four female founders, who were of Middle Eastern origin. The populations of Sephardi and Mizrahi Jewish communities "showed no evidence for a narrow founder effect." Subsequent studies carried out by Feder et al. confirmed the large portion of the non-local maternal origin among Ashkenazi Jews. Reflecting on their findings related to the maternal origin of Ashkenazi Jews, the authors conclude "Clearly, the differences between Jews and non-Jews are far larger than those observed among the Jewish communities. Hence, differences between the Jewish communities can be overlooked when non-Jews are
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