This could be a potentially hot topic depending on what country and the part of the country which you live in. It could also vary greatly depending on which generation you find yourself in. This is just my opinion, but here are the points that I would ask you to consider. From the beginning, there was only one human race.
Scripture reveals two major events that affected human genetics.
The first was the flood. Noah and his seven companions were the only survivors of the flood. Scripture doesn't tell us what these eight people looked like, but it is certain that every feature humans have today was brought into the world by them. After God judged the people with different languages, they grouped together by those languages and spread over the face of the earth. As these people settled, they brought with them their own genetic features.