Boys with 'Warrior Gene' More Likely to Join Gangs
http://news.yahoo.com/s/livescience/20090605/ ^
Boys who have a so-called "warrior gene" are more likely to join gangs and also more likely to be among the most violent members and to use weapons, a new study finds.
"While gangs typically have been regarded as a sociological phenomenon, our investigation shows that variants of a specific MAOA gene, known as a 'low-activity 3-repeat allele,' play a significant role," said biosocial criminologist Kevin M. Beaver of Florida State University.
In 2006, the controversial warrior gene was implicated in the violence of the indigenous Maori people in New Zealand, a claim that Maori leaders dismissed.
But it's no surprise that genes would be involved in aggression. Aggression is a primal emotion like many others, experts say, and like cooperation, it is part of human nature, something that's passed down genetically. And almost all mammals are aggressive in some way or another, said Craig Kennedy, professor of special education and pediatrics at Vanderbilt University in Tennessee, whose research last year suggested that humans crave violence just like they do sex, food or drugs.
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