Small motor coordination is probably inherited as well (remember, I'm talking about the physical components of natural talent, not about genius, which appears to be beyond physical explanations).
Nobody ever questions the notion that the physical components of athletic talent can be inherited. Let's take Larry Bird as an example, for those who remember him and the glory years of the great Celtics-Lakers rivalry. His height was obviously inherited. So was his eye-hand coordination, though he worked relentlessly to develop his shooting to near perfection. Compared to many NBA players, he wasn't all that talented. He wasn't a fast runner. Or a great jumper. But he had freakish peripheral vision. He often seemed to have eyes in the back of his head. Surely this was inherited. But what about his mental toughness? He was one of the greatest clutch players in history. The guy just never choked, no matter how much pressure he was under. Was that inherited?
So with art, I think it's all about things that can't be quantified. It's what goes on inside your head that counts.
But without the physical abilities required to translate what's in your head into an outstanding work outside it, you will get nowhere. Those physical abilities are the components of natural talent, and some people simply have more of it than others.
Can intelligence be inherited?