/sci/ - Science & Math

>>9351074
Human migrations are complex and people have been fucking each other for thousands of years. Races are just manmade boundaries to try and group similar ethnicity together. Ethnicity is very real but there's no hard and fast racial groups.

If you've taken an evolutionary biology class (which I doubt you have) you would know that even species are not so easily defined all the time. Hybrids (horse + donkey = mule) or ring species (can only interbreed with geographically adjacent populations) make the lines fuzzy. That doesn't mean humans and bears aren't different species, just that boundaries aren't always clearly defined