WHAT if you could tell whether a man is husband material just by peering at his genes?
There has been speculation about to role of hormone vasopressin in humans ever since we discovered that variations in where receptors for the hormone are expressed makes prairie voles strictly monogamous but meadow voles promiscuous; vasopressin is related to the “cuddle chemical” oxytocin. Now it seems variations in a section of the gene coding for a vasopressin receptor in people help to determine whether men are serial commitment-phobes or devoted husbands.
Hasse Walum at the Karolinska Institute in Stockholm, Sweden, and colleagues…
