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Why I regret using 23andMe: I gave up my DNA just to find out I’m British | Technology | The Guardian
(www.theguardian.com)
This is a most excellent place for technology news and articles.
I guess both 'identity' and 'heritage' are doing a lot of heavy lifting.
And I know this is mostly pedantry, but there're terms that actually do fit better. Like immigrants, settlers, etc.
My great grandad was from Sicily. I'm from Minnesota. I don't have any heritage or identity that has much to do with Sicily. I do have heritage as the progeny of immigrants from Sicily. But not Sicily.