In the social sciences the subject is human nature, which is not as cut and dried as 'genetic', 'biological' or 'behavioral' correlations may imply. The violin is based upon an historical pattern that produced a favorable sound. Well, as an individual violin has a characteristic appearance and sound, with a few minor modifications from instrument to instrument, so do human beings have individual differences and idiosyncracies. The utility of a violin is that it plays music, but here is where human nature differs from the genetic model. Like the human being, the violin does not play only one tune, or even a few tunes as the chimpanzees or urban Mallard ducks do.
Violins play lots and lots of different music.
This music may range from solo concertos to back up harmony in an orchestra. Human beings the same thing. We certainly do have features and behaviors that are built into our constitution, but we operate our own behavior just the same as we play a violin. The tune played on the violin is typically harmonized and self consistent, just like human culture. The utility of a theory is that it allows one to make predictions.