What role does genetics play in human behaviors? Are criminals “just born that way” or does their environment contribute? If you had to pick between nature and nurture to explain violent criminal behavior, which would you choose? Why?

What role does genetics play in human  behaviors?  Are criminals “just born that way” or does their environment  contribute?  If you had to pick between nature and nurture to explain  violent criminal behavior, which would you choose?  Why?