Married couples have similar DNA

Spouses have more things in common than shared preferences and dislikes, such as DNA.

According to a new study, married couples have more similar genetic genes than two other people who had been randomly chosen.

Educational background is another trait that has similarities with spouses, even more than genetic resemblance which would account for a quarter of the educational level similitude.

Geographic origin is also a trait shared by married couples.

The study was conducted on 9,429 non-Hispanic whites, out of which 825 were wedded couples.