The classification systems usually used to distinguish races are based on

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The classification systems used to distinguish races are based on continuous rather than discrete traits, such as skin color, eye shape, and hair texture. These traits do not cleanly separate individuals into distinct categories, but rather show gradations of variation across populations. The idea that there are only three main races is a simplification that does not reflect the complexity of human genetic diversity. Additionally, different cultures have historically used different criteria and categories to define race, meaning that there is not a universal standard. Finally, genetic traits do not determine behavior patterns in a deterministic way and cannot be used to classify individuals into races.

The Classification Systems Usually Used to Distinguish Races Are Based