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If You Thought Paternity Testing Hit Paydirt, Just Wait for the Commitment-Phobe Kit

This will make for some awkward conversations at the dinner table. Scientists from the Karolinska Institute studied a particular genetic variation linked to vasopressin, a hormone that is apparently key in forming emotional attachments. Men with this variation in the AVPR1A gene "are prone to marital strife and are less likely to wed," according to the study. This BBC article adds that men with two copies of the variant were twice as likely to "report having had a marital crisis in the past year."

Maybe DNA-based dating isn't such a bad idea after all.