Estimates of the Heritability of Human Longevity Are Substantially Inflated due to Assortative Mating.

Genetics · 2018 · PMC6218226 · PMID 30401766

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a clear trendno p-value reported

The place-of-birth distribution revealed a clear trend: the large majority of births in the 20th century were within North America—specifically, in the contiguous United States—while the large majority of births in and prior to the 18th century were in Europe.

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