[balentio]

Is it a genetic bottleneck, or is it "We'd rather not understand Jewish DNA so much?"

[wkearney99]

Did you not read the linked article? One point FTA that might have some bearing: "Nobody had analyzed Jewish ancient DNA before because of prohibitions on the disturbance of Jewish graves. However, we did not know this until after doing the genetic analyses."

[balentio]

Yep. Funny thing, people with Jewish DNA aren't all buried in Jewish graveyards.