"…mutation in people of ASHKE-NAZI descent;"
He's saying that it's a way to identify the pretenders, who claim to be jewish (genetically), but are not even genuine bloodline Israelites (descendants of Abraham; they're lying whores).
You can't be anti-semitic to someone that's not even a semite. lol
It substantiates the claim that most of them are just a bunch of Babylonian money whores and foreskin suckers.