Everyone has his set of rules governing the important decisions in life (OK, almost everyone). One interesting question is how does one build this set of rules and what does ultimately influences the course of his or her life. It's well known that the environment is an important factor, usually the family values, education, life meaning. But is there also something else, something you're born with?
Contrary, to popular belief, a recent study featured recently on the free link directory found that age of death is most influenced by one single factor: your genes. Whether you smoke, drink alcohool, eat right so on and so forth, play a smaller role that the genetic material you're born with. The correlation is not completly clear but one day you may know accurately how much you have left to live (factoring out accidents and WWIII).
Is it the same with ethics? Do you have innate ethics and acquired ethics? Could you screen a child at birth and see whether he's going to be a decent man or a criminal? Eventually yes, but don't worry about it. Not in this lifetime!