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BookWatch: The future of dating: What’s your genetic profile?

The art of mating has undergone many technologically induced changes from the liberation that young lovers found with the invention of the automobile to the swipe-right ease of matching on Tinder.

But another technology is afoot that few people know about but that will upend the way we match and reproduce in years to come: the polygenic score. This is a single number that sums up someone’s genetic potential—risk for disease such as diabetes or predicted height or even the genetic portion of her IQ.

OkCupid, meet 23andame.

With the spread of recreational genotyping through services like ancestry.com or 23andme, more and more Americans have learned some of what their DNA can tell them about their past (their ancestral origins) and their future, such as their risk for diseases like Alzheimer’s.

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