Sex Chromosome Genes Influence Aggression and Maternal Behavior
It has been well documented that, across human cultures and in most mammals, males are usually more aggressive and less nurturing than females. It's simple to blame male hormones, like testosterone, for male behavior such as aggression. But maybe it's in our genes, too.
Indeed such social behavior also has a genetic basis, according to new research on mice by neuroscientists at the University of Virginia Health System.