I would've thought that the traits that you are psychologically brainwashed into believing are desirable will be the traits that you see propagated... selective

I would've thought that the traits that you are psychologically brainwashed into believing are desirable will be the traits that you see propagated... selective breeding. This will mean that if we're brainwashed into believing that a certain model of "beauty" is the most desirable to breed with, that's what we will breed with. Over time, these traits will become predominant. If certain adaptations are desirable, they will continue to be propagated, if they're not, they won't.