A wedding couple of tourists pose for their own photographer at the Trocadero Square near the Eiffel Tower in Paris, in this May 16, 2014.(REUTERS/Christian Hartmann)
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People tend to choose spouses who have similar DNA, according to scientists who reported Monday the results of a study exploring the genetic resemblance of married couples.The researchers examined the genetic blueprints of 825 married couples in the U.S. and found a significant preference for a spouse with DNA similarities across the entire human genome.The study compared this affinity for husbands or wives with similar DNA makeup to the well-established and strong tendency of people to marry mates with similar educational levels. The researchers found that the preference for a genetically similar spouse was about a third as strong as the preference for a spouse with comparable education.The researchers said it would be interesting to see the results of similar studies involving other populations including additional races, interracial spouses and gay couples.
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