A race is what zoologists term a variety or subdivision of a species.

Formation of a new race takes place when, over several generations, individuals in one group reproduce more frequently among themselves than they do with individuals in other groups.

Deconstructing the concept of race not only conflicts with people's tendency to classify and build family histories according to common descent but also ignores the work of biologists studying non-human species.

Nonetheless, much has been learned by studying the statistical differences between the various human races.

Each race (or variety) is characterized by a more or less distinct combination of inherited morphological, behavioral, physiological traits.