Male divorce gene

The lead researcher, Hasse Walum, from Stockholm's Karolinska Institute, said: "We've found evidence that oxytocin can be involved in the regulation of human pair-bonding by showing that variation in the oxytocin receptor gene is linked to how strongly women bond to a partner."
The same team found the male version of the divorce gene in a study four years ago. It affects how the brain used the chemical vasopressin, which in turn affects men's ability to commit and remain faithful.