Genes are not simple triggers. No one is hardwired to commit murder or any other crime. Our actions are always the result of stupendously complex gene-environment interactions, and environment is likely to remain the more important influence by far.
“I'll always be there because I'm a skilled professional actor. Whether or not I've any talent is beside the point.”
“A man may not always be what he appears to be, but what he appears to be is always a significant part of what he is.”