I would think for a pool of candidates of varying temperaments due to natural variations, some temperaments would would be more likely to pass on their DNA depending on various external factors like climate, terrain, and yes - society.
The military has started thinking about societies as "human terrain" precisely because it IS just another factor of environment. It is as real as the physical ground, vegetation, and weather.
The more I think about it and read about it, I see no reason why culture would NOT influence who gets to mate with who. Different cultures value different attributes, and those distinctions regularly decide who you let marry your daughter, who you let your son date, or who a person finds attractive in a mate.
It is highly unlikely that as society we select for aggressiveness or business acumen
Selecting an aggressive mate may WELL have been the difference between life and death in some cultures. And indeed MANY cultures teach their children to hold overly-driven, businessmen/doctors/lawyers/athletes in high esteem.