PSA for those who don't know: "Caucasoid/Caucasian" isn't a race, it's an anthropological classification for three different races (W. Iranic/Anatolian/Caucasian, European/E. Iranic, and Semitic) who shared a common ancestor like 48k years ago.

It does get more complicated, however, when you look at heterogeneous "ethnic groups" like Turks or ethnic groups that are the result of miscegination (ex: Kazakhs). That being said, just because there are mixed ethnicities doesn't mean there aren't "pure" ones