Milgram argued that evolutionary selection bred an inherited propensity for obedience

Evidence

The first characterization concerns its evolutionary nature. Human beings must often function within organizations. Thus, evolutionarily, according to Milgram, they have developed the potential for obedience. That is, the standard workings of evolutionary selection pressures have brought about an inherited propensity to obey. — John T. Jost and Jim Sidanius, Political Psychology, 3926