Genomics and the Biological Concept of Race

Humans have not generally evolved as discrete reproductively isolated units. There is emerging evidence for extensive gene-flow historically between geographic locations at all scales. Traditional races do not mimic a scientific biological categorization of humans but are eurocentric constructs. There is no scientific evidence that natural selection has favored ‘middle class values’ in agrarian societies – or any other evidence that cultural differences between groups are genetically determined.