In 1991, a man named Stephen Mobley robbed a Domino’s pizza in Hall County, Ga., and shot the restaurant manager dead.
Crimes like this happen all the time, but this particular case became a national story, in part because Mobley seemed so proud of his crime. After the robbery, he bragged about the killing and had the Domino’s logo tattooed on his back.
But there was another reason Mobley’s case became famous.
Right around the time Mobley went to trial, a study was published in a scientific journal about an extremely interesting gene called MAOA: monoamine oxidase A.
A Troubled Dutch Family
A geneticist named Han Brunner had been looking into MAOA — specifically what happens where there’s a mutation in it — and, for his research, had decided to study a very unusual Dutch family.
Read the whole story: NPR