Final answer:
Race is a social construct rather than a biological fact, defined by physical traits that society considers significant, although there is considerable genetic diversity within any given racial category.
Step-by-step explanation:
Race is fundamentally a social construct characterized by superficial physical differences that a particular society deems significant. Historically, racial categories have been assigned based on characteristics like skin color and geographic origin. However, the concept of race is not supported by genetic science; it has been shown that there is as much or even more genetic variation within populations labeled as the same race as between populations of different races. Therefore, race is more about social perceptions and categories than about biological or genetic distinctions.