Oh yeah that’s a common question about ethnicity usually an optional question filled out in case there’s some legal process in the future trying to determine if there’s underlying discrimination from poor treatment/service to a specific group when a legal complaint has been lodged.

I’m talking about the weird obsession some Americans have with determining what % of their genes originated from other countries.

The closest it’s gotten for me is usually a conversation about family history which most of the time is usually “A country on my father’s side and B country on my mother’s side”. But they’ve never broken it down into percentages before like it’s some sort of eugenic recipe.