Race and ethnicity are two concepts related to human ancestry. Race is defined as “a category of humankind that shares certain distinctive physical traits.” The term ethnicities is more broadly defined as “large groups of people classed according to common racial, national, tribal, religious, linguistic, or cultural origin or background.”

“Race” is usually associated with biology and linked with physical characteristics such as skin color or hair texture. “Ethnicity” is linked with cultural expression and identification. However, both are social constructs used to categorize and characterize seemingly distinct populations.

Neither race nor ethnicity is detectable in the human genome. Humans do have genetic variations, some of which were once associated with ancestry from different parts of the world.