it showed that in terms of Y-DNA it was mainly from the same Levantine source as the vast majority of the world's Jewry, meaning that they too are descendants of the Ancient Hebrews/Israelites from the Biblical times. In the case of Ashkenazi and Sephardi Jews (in particular Moroccan Jews), who are apparently closely related, the non-Jewish component is mainly southern European. Genetic research shows that about 27% of Moroccan Jews descend from one female ancestor. Analysis of mitochondrial DNA of the Jewish populations of North Africa (Morocco, Tunisia, Libya) was the subject of further detailed study in 2008 by Doron Behar et al. The analysis concludes that Jews from this region do not share the haplogroups of the mitochondrial DNA haplogroups (M1 and U6) that are typical of the North African Berber and Arab populations. Behar et al. conclude that it is unlikely that North African Jews have significant Arab, or Berber admixture, "consistent with social restrictions imposed by religious restrictions," or endogamy. This study also found genetic similarities between the Ashkenazi and North African Jews of European mitochondrial DNA pools, but differences between both of these of the diaspora and Jews from the Middle East. In a 2012 study by Campbell et al., however, the Moroccan/Algerian, Djerban/Tunisian and Libyan subgroups of North African Jewry were found to demonstrate varying levels of Middle Eastern (40-42%), European (37-39%) and North African ancestry (20-21%), with Moroccan and Algerian Jews tending to be genetically closer to each other than to Djerban Jews and Libyan Jews. According to the study:"distinctive North African Jewish population clusters with proximity to other Jewish populations and variable degrees of Middle Eastern, European, and North African admixture. Two major subgroups were identified by principal component, neighbor joining tree, and identity-by-descent analysis—Moroccan/Algerian and Djerban/Libyan—that varied in their degree of European admixture. These populations showed a high degree of endogamy and were part of a larger Ashkenazi and Sephardic Jewish group. By principal component analysis, these North African groups were orthogonal to contemporary populations from North and South Morocco, Western Sahara, Tunisia, Libya, and Egypt. Thus, this study is compatible with the history of North African Jews—founding during Classical Antiquity with proselytism of local populations, followed by genetic isolation with the rise of Christianity and then Islam, and admixture following the emigration of Sephardic Jews during the Inquisition." See also History of the Jews in Africa History of the Jews in