I think this world has an abundance of genetic diseases and Barrett is like a prime alpha, so his genes can cancel out his partners negative genetics if they're carriers so the offspring won't have any genetic diseases or mutations. I think that's is what happening.
Yeah, pretty much. He's supposed to be the one who's going to make humankind take another step in the evolutionary process. But, just as he said in chapter 12, breeding is not enough to sustain an entire species... So, basically, everything revolves around that.
Can someone pls explain how this world works I'm so confused what do they mean he's the savior of mankind my brain is about to explode any second hhhh