Genes don't lie. Only political orthodoxy in a racially stratified society has maintained the race concept for this long. If race does not exist at the biological level, then its use in social and political policy is profoundly flawed. In the grand sweep of creation, he avers, people who might appear to be different are really much more alike than different. Race is a social construct.
Racism is based on fiction.
While varieties in humans' skin color and skeletal and hair types are undeniable, Graves contends that genetic variation within the so-called races is frequently greater than between the races. But our relatively superficial differences are magnified because they are inundated by cultural bias, environment, climate, education, health care and disparate opportunity. Or we could imagine that a group of people had maintained a unique ancestry, without substantial intermixture with other groups of people. Neither of these conditions is true within our species today. He says the scientific footing for his thesis has been known for 50 years, but cultural biases have kept them from our consciousness.