I suspect that there's a significant amount of behavior that is genetically driven (like an Aby is an Aby) but there is also a significant part socially driven.

We can predict how some breeds will behave when raised from kittenhood with love, safety and affection, however, this same cat forced to survive on the street will adopt a much less social behavior. And that cat will take longer to trust you (if ever) and probably never really trust that there will be food in the dish tomorrow.