I have no idea how much of the behavior is just genetically determined and what comes from the environment.
Tigris and Filou have many different traits in their character but as I do not know Tigris' brothers and sisters I cannot tell you what is hereditary.

With all the Abys here you can see that there are similarities which show that things like sitting high, balancing on top of railings or being vocal or not will have a genetic part. On the other hand I have the impression that wanting to be held or not resp. the favorite cuddles (chin or tail ) are acquired behavior.