Violent Genetics
July 14, 2008 / 5:25 pm • By Dr. Melissa Clouthier
So, there is a violent gene, but (and this is a big BUT) it can be ameliorated by environment:
MAOA regulates several message-carrying chemicals called neurotransmitters that are important in aggression, emotion and cognition such as serotonin, dopamine and norepinephrine.
The links were very specific.
The effect of repeating a grade depended on whether a boy had a certain mutation in MAOA called a 2 repeat, they found.
And a certain mutation in DRD2 seemed to set off a young man if he did not have regular meals with his family.
“But if people with the same gene have a parent who has regular meals with them, then the risk is gone,” Guo said.
“Having a family meal is probably a proxy for parental involvement,” he added. “It suggests that parenting is very important.”
Could a criminal claim bad genes? I suppose he could try. (Note that the research wasn’t conducted on women and girls.) Here’s the thing though: Just because you have a gene doesn’t mean that it has to express itself. Since environment can turns these on and off, a criminal will have a tough time claiming no responsibility.
And that sword cuts both ways, and this part concerns me generally: would a judge keep a criminal with a “bad” gene in jail?
This slope is slippery, people. Will insurance companies insure drivers or the health of people carrying the “violent” gene? I’m guessing that the violent guy would be more likely to experience road rage, heart attacks and trauma secondary to violent interactions. Who is going to want to insure that?
And, will parents of embryos with the “violent” gene abort their babies or not implant them?
The time to consider all this is now.
















