This article gives women the ultimate aliby - "it's genetic" when they are angry, abusive, catty, bitchy, murderous? Excerpt:

'Not your fault

The results counter some common beliefs that women are to blame for their hostility. And genetic tests for anger could help predict a woman's likelihood of other anger-related diseases.

"Aggression and hostility are predictors of hypertension, glucose metabolism and heart diseases," Halder said. "The genetic marker we found for hostility also may be useful for predicting a person's predisposition to such diseases."'