Almost half of Europe's Jews are descended from just four women, according to a new study. [...] The four women are thought to have lived in the Middle East about 1,000 years ago but they may not have lived anywhere near other, according to the study published in the American Journal of Human Genetics. However, they bequeathed genetic signatures to their descendents, which do not appear in non-Jews and are rare in Jews not of Ashkenazi origin.

I'm sure that close friend and main nemesis AlefAlef - who is Sephardi whereas I am Ashkenazi - is simply heartbroken that he and I are not more closely related.