'Warrior Gene' Responsible for Gang Membership, Weapon Use

(PhysOrg.com) -- Boys who carry a particular variation of the gene Monoamine oxidase A (MAOA), sometimes called the `warrior gene,` are more likely not only to join gangs but also to be among the most violent members and to use weapons, according to a new study from The Florida State University that is the first to confirm an MAOA link specifically to gangs and guns.

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