Your ‘Ethnicity Estimate’ Doesn’t Imply What You Suppose It Does

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DNA testing companies are rolling out algorithm updates, spotlighting the fickleness of ethnicity results, and perhaps reinforcing some troubling beliefs. When the genealogy company Ancestry released the latest update to its “ethnicity estimates” last month, a lot of people suddenly became more Scottish. Since 2012, more than 18 million people have mailed their spit-filled vials …
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