Over the years, this theory has evolved into the most important theory of biological crime today. The theory takes into account genetics and disorders that may be hereditary. An example of a genetic disorder is antisocial personality disorder. This specific disorder comes with various side effects, some of which can lead to psychopathic or sociopathic behavior. Psychopathic and sociopathic behavior specific to this example would be murder. Jeffrey Dahmer, for example, participated in seventeen murders over a thirteen-year period. Although Dahmer could not claim insanity, he still suffered from a serious mental disorder which may be partly responsible for some of his actions. Biological disorders are often difficult to justify, because many disorders also rely on upbringing.