This document discusses research on whether identical twins share similar criminal behaviors due to their shared DNA. It presents several studies that found high correlations in criminal behaviors between identical twins, with genetics attributed to 60-71% of traits related to crime like aggression. However, it also notes that environment can play a small role and that not all identical twins will necessarily share criminal tendencies. The conclusion is that the prevailing evidence suggests genetics and shared DNA between identical twins leads to similar levels of criminality.