Dude, you're a fucking idiot. Most of "Caucasian" DNA is going to include the vast majority of the rest of humanity. You literally will kill everyone. Like humans are a bunch of inbred apes that share the vast majority of their DNA. Also you would kill a good amount of non-human life because animals share the majority of their DNA with humans as well, so you'd basically kill all the mammals on the planet.
Dumbass.