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Chabad dot org
Who were the Khazars
Clue. This might explain why all the Jews are allergic to olive trees and none of them have genes tracing back to Israel.
I suspect jews as we know them predate the Khazarim; but their “conquest” (or more accurately; the death of the Khazarian host society, and jewry’s absorbtion of everything “useful” into their gene pool) represented an influx of Eastern European phenotypes - and selected specifically against Christianity.
I suspect this same exact process is what eventually ended Phoenicia, Canaan, Edom and others who may have been lost to history. Like the Borg, everything that wasn’t useful to the Collective was discarded.
How could unique "Jewish" DNA be passed down if the "Jewish" lineage focuses on the mother but human mother's have two X chromosomes so the unique X chromosome could be lost unlike the Y chromosome that could be the same for every father. Now special mitochondria could pass down to the next generation. Or if they do not have human DNA gender might work differently passing on the "Mother's" DNA without loss of what makes them "Jewish"
I’m just not sure how they can find jewish markers in DNA. Honestly, I’m skeptical of the entire DNA narrative, as jews have long been featuring prominently in their “pioneering” discoveries - and there‘s no truth in the jews.
While I don’t deny its existence, and centrality of DNA to the accurate understanding of Heredity, I suspect many smokescreens and fogs-of-war are in place. They could be looking for something completely different from mitochondrial DNA, for example, in making their determination; it may possibly be tied to the Cohens, and mitochondria could be the cover story. As I haven’t got significant access to their databases, or their determining algorithms, I’m stuck having to “take their word for it”.
Although I have speculated about a possible genetic origin
It could be that they are simply trans racial
They religiously identify as being a race with no biological basis to support that they are that race
Although due to primarily mating with people in that community their might be something similar to what you see with the Amish where a lot of them are closely related even though there is no racial requirement to become Amish