Do you believe there is a latent trait that makes a person crime prone, or is crime a function of environment and socialization?
My answer is "yes." In other words, I think that both factors can have an impact on whether a person will commit some forms of crime.
For example, there are genes that have been connected to the propensity for violence. There are genes connected with a low ability to exercise self control. These sorts of traits would make it more likely that a person would commit a crime.
But these genes do not, by themselves, cause criminal behavior. A person who has somewhat less innate self control, but has been "trained" by socialization to control himself might not commit crimes. Both "nature" and "nurture" surely play a part.