Specifically, pro-PRC. Their policy is supposed to be even-handed, right? /s

Yeah, I decided not to rely on the numbers in that paragraph because of the last sentence — “This is a great contrast with normal genes, which can only spread in large populations if they are beneficial.” — that’s not quite accurate, thanks to genetic drift. (And because I was too lazy to check the reference. Genetics …

Here’s the high-school bio version (based on a quick skim of the overly technical Wikipedia article):