I think it rolls downhill. Kids watch their parents. If they see a mother being disrespectful or argumentative (NAGGING) to her husband, guess what the kids will do to the mom? Same with the dad; if the dad is abusive and not supportive to the wife, guess who will rebel against the parental authority later? It's not cookie cutter or the same in every case, but I think the parent's have a lot to do with it.
Parents have EVERYTHING to do with it.