There were people who CHOSE to stop being publically labeled as Jews generations ago to avoid issues with neighbors who might not have been tolerant of other religions in a world that had NOT developed the concept of "politically correct". Or even "religious tolerance".
So - the French-Canadians or other small pockets of people with the gene MIGHT have a common ancestor from the Ashkenazi population of a century or two ago. Or it might be a mutation that appeared independently...something for the doctors and scientists to research.
And they have ; it is a different mutation in the French -Canadian population. Researchers aren't stupid; this would have been something they checked- and did check early on. No need to be hostile towards me.
Mom retired from the medical research field in the 1990s - I no longer get updates on the latest research when visiting them...and I don't always remember the details of "dinner conversation" after twenty years, even if she did read anything about it and mentioned it to me when I was visiting.
I was simply musing out loud - no hostility intended. I'm sorry if you read anything into my musings...