Genghis Khan ruled the largest empire in the world, pillaging his way across Mongolia and Asia in the 13th century. Today, 16 million men living in the same region are his descendants. What chromosome(s) do you think scientists examined in order to determine that these men are related to Genghis Khan?
The so-called warrior gene comprises particular variations in the X chromosome gene that produces monoamine oxidase A (MAOA), an enzyme that affects the neurotransmitters dopamine, norepinephrine, and serotonin.
