"But just how specifically can genetics control such a thing? That's really hard to tell. There is an argument for a non-genetic component, based purely on sociology, and the "passing down" of morality from one generation to the next, primarily via story telling. But then again, our ability to tell stories is also genetically encoded as a particular brain structure/organization, so I guess I'd have to say whatever the answer, it is complex and multifactorial, but ultimately not inexplicable."

Yes! These are questions that I'm very much intrigued by. Not, mind you, intrigued enough to do any research or searching... but intrigued nonetheless. :) How much of what goes on in our minds relate to chemical/genetic/structural things, and how much is the "mind" (or whatever you want to call it). It's not inexplicable, it's ineffable, which is much more fun to say... in-F-able!