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 started tapping and I was okay. Then after about two years my feet knew what they were doing!”
“I don't want to be nasty but let's just say Robbie Williams is no Freddie Mercury.”