It isn't that hard to figure out, a nice jewish girl, and everybody had herAs coincidence would have it, both populations that have been the subject of this thread - (Ahskenazi) Jews and Cajuns - really do have (had) very high levels of inbreeding, and were formed from small founding populations.
As a result, both groups have high occurences of similar afflictions, notably Tay-Sachs, which is a near exclusive to Ashkenazi Jews and French-speaking North Americans.
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