Posted By:Annie Carlile
Subject:Re: A REAL Challenge - Dan Robillard, Ottawa, 1927
Post Date:September 10, 2012 at 11:41:36
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Forum:Robillard Family Genealogy Forum
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According to this website :

the chance of being a carrier of the CF gene is 1 in 25-29 for French Canadians, or slightly less prevalent that in Caucasians, 1-25, the highest risk group for the disease.

You are on the right track though. DNA testing might help find any Robillard or Cote families that most closely match your mother's DNA.

I know Ancestry sells a kit. Annie