Men respond more aggressively than women to stress and it's all down to a single gene

Men respond more aggressively than women to stress and it's all down to a single gene: The pulse quickens, the heart pounds and adrenalin courses through the veins, but in stressful situations is our reaction controlled by our genes, and does it differ between the sexes? Scientists believe the SRY gene, which directs male development, may promote aggression and other traditionally male behavioral traits resulting in the fight-or-flight reaction to stress.