Biologically, all human beings belong to the same race. Although theorists over the years have tried to identify anywhere from three to twelve races, DNA evidence confirms what mixed families have shown all along—we are all one race. The holy writings of Judaism, Christianity, and Islam all agree that every human being is descended from Adam and Eve. Nonreligious scientists also agree that every Homo sapiens sapiens living today has a common ancestor whom those scientists have nicknamed “Eve.” Various other theories about ancestry have been proposed, ranging from the thought that a small percentage of people alive today have Neanderthal ancestors (based on interpretation of DNA samples) to the thought that a percentage of people alive today have extraterrestrial ancestors (based on various blood types). Even outlier notions of the origin of contemporary humanity, though, concur that all humans today belong to the same family tree and do not come from different races.
The textbook I use to teach World Civilizations to college students mentions the unity of the human race more than once. Only on one occasion (surprisingly) has a student asked in the classroom why the same textbook refers to conflict between different groups of humans as “racism.” If we are all the same race, how can racism exist? The answer to this rather profound question is found in the history of labels and also in the still-common misperception that several human races coexist.
Humans can be sorted into different groups according to numerous differences: skin color, hair color, hair texture, facial features, average height, body build, and more. These physical distinctions are hereditary, so a mother and father with dark skin will generally produce children with dark skin, and so on. At the same time, though, differences between the DNA of two siblings (children of the same mother and father) might outnumber differences between the DNA of one of those children and another child whose physical distinctions, as listed above, are entirely different. Again, the existence of mixed families confirms the biological fact that all humans belong to the same race; inherited variations are not marks of different races, but only of different genetic backgrounds within the same race.
But, if we are all of the same race, how can racism exist? Racism is a combination of bigotry, prejudice, and discrimination, three terms I will soon (tomorrow) define. As a catch-all term, the word “racism” is unfortunate in its persistence, being inaccurate about what it describes. Although bigotry, prejudice, and discrimination can all be identified in ancient history (and can be found in all parts of the world, even in ancient times), the modern concept of racism is closely linked to nationalism and culturalism, both of which I must define first (tomorrow). J.