Answer: It's been used to define and separate people for millennia. But the concept of race is not grounded in genetics. There is broad consensus across the biological and social sciences that race is a social construct, not an accurate representation of human genetic variation. Humans are remarkably genetically similar, sharing approximately 99.9% of their genetic code with one another.
Explanation: Race is a social concept, created by humans, and is not biologically provable using the criteria often meaningful in distinctions of race. As such, there is no scientific basis for the concept of race.