Abraham modal haplotype

The Abraham modal haplotype is a modal haplotype (a set of DNA sequences that are inherited together) on the Y-chromsome that has been hypothesized to mark the split between the Jewish and the Arabic lineages.
Anatole Klyosov estimated the time to the most recent common ancestor MRCA of Jews and Arabs of haplogroup J1 (subclade J1e) to 4,125±525, a time close to that of the legendary Biblical split into the Jewish and the Arabic lineages. and in 2010 he recalculated time to MRCA again in another study to 4,300±500 years ago, and MRCA had the "J1 Abraham Modal Haplotype" which he calculated based on "Cohen Modal Haplotype" (CMH). From MRCA a split occurred between the Jewish and the Arabic lineages in haplogroup J1 (J1e*) that is clear on the haplotypes maps of the study, and it is reminiscent of the story of Abraham and his siblings, Ishmael, Isaac, and Jacob, the patriarchs of the Arabs and the Jews.
The original CMH is present in several Near Eastern populations. 46.1% (95% CI = 39-53%) of Cohanim carry Y chromosomes belonging to a single paternal lineage (J-P58*) that likely originated in the Near East well before the dispersal of Jewish groups in the Diaspora. Support for a Near Eastern origin of this lineage comes from its high frequency and its precipitous drop in frequency as one moves away from the Near East.

Rabbi Kleiman in his book DNA and Tradition states: "Since Abraham was only removed from Aaron few hundred years, then CMH is the genetic signature of Abraham father of Jacob and Ishmael, and that explain why we also find the CMH in high numbers among Arabs who traditionally claim to be the progeny of Abraham through his son Ishmael, who would also have to be carrying Abraham's male genetic signature".
See Also
* Abraham
* Haplotype

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