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Mexico boasts a staggering genetic diversity, study shows
Mexico boasts a staggering genetic diversity, study shows

Writers, artists and historians have long pondered what it means to be Mexican. Now science has offered its answer, and it could change how medicine uses racial and ethnic categories to assess disease risk, testing and treatment. The broadest analysis of the Mexican genome ever undertaken reveals a nation of staggering genetic diversity, where European conquest only thinly masks the ancestral DNA of Native Americans, and where some populations remain as distinct from one another as Europeans are from Chinese, according to findings published Thursday in the journal Science. Forty researchers, who share Latino heritage as well as professional qualms over the significance of ethnic and...

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