Is any other religion defined on genetic testing besides Judaism?

Ancestry.com and the other genetic tests will tell you if you are part European Jewish or Ashkenazi Jewish. I have no idea if it also has a category for Sephardic Jewish. I also am wondering if any other religion is defined genetically as a group?

In some ways I find it a little odd. I don’t know what it is about European Jews that is genetically unique that the tests can pick it up. Does that make it a race in your mind?

I know a woman who has a friend who does genetic research, and uses Jews in some of his work. The way I understood her, because the group was so tighknit for so many thousands of years it’s easier to find genetic markers, like how they gathered the genetic sequence of the Icelandic people for the same sort of research.

Can they tell you if your ancestors were Catholic or Hindu? Would you want to know?

It’s just odd to me to single out a religion. We don’t do it on our census in America, which I’m glad, even though as a group it might be interesting information for migration, demographics, psychographics, and indeed politics and business do sometimes define the group and their habits.

I’m interested in your thoughts.