We don't know that. For instance, there is a "chemical clock" that teaches the hard to beat in feutuses (and it does some other stuff too). There is much behavi

We don't know that. For instance, there is a "chemical clock" that teaches the hard to beat in feutuses (and it does some other stuff too). There is much behavior training in other parts as well, for instance to make you breathe there is a reflex. I think it's a pretty safe assumption to make that we only know the big honking in-your-face examples of genetic behavior. * So while there is no hard drive with data it does "load data on the networks" in the sense that it puts them into train mode and trains a specific set of actions. Secondly, from ~16 days after conception the brain (at that point a human embryo is something close to a fish) the brain is trying to learn. At that point, all it can perceive is the mother. So it learns ~8.5 months from the mother before drawing it's first breath. That's also "loading from the harddrive", just with more efficiency. * one revealing experience I've had is owning an animal and then going to a dog show. The character of dogs of the same breed, even ones that have never seen eachother, ever, in uncannily similar. For horses and cats, I hear it's even worse. I've heard claims that some horse trainers know the exact family relations of a group of horses after observing them for 10 minutes just by seeing behavior differences. But the cats and dogs examples are pretty strong, since those are matching character traits in animals that don't share any close family bond, just the breed, and have never seen eachother. Their mothers and fathers have never seen eachother. And still, they react to strangers exactly the same way, down to whether their head is tilted left or right, how long they look, and many such small things.