One can completely believe that genetic and biological predisposition to crime exists, but still know it in no way absolves one of personal responsibility, or that free will does not exist.
My SIL by marriage is adopted. As is her older brother. Both have different birth families.
My SIL, a special-ed high school teacher and girls tennis coach found her birth mother, who just happens to be a special-ed high school teaching assistant, and girls volleyball coach.
Her brother found his birth parents, both in prison at the time, and with lengthy arrest records. Before that time, he was constantly in and out of jail for drugs, larceny, and parole/probation violations. He has the notable distinction of being the only student at their local high school who had to be carried out in a straight jacket and hogtied/leg-irons by the police.
After finding his birth mother, he wound up murdering his live-in girlfriend through strangulation, and then his birth mother helped him dispose of her corpse.
http://www.fox11online.com/dpp/news/local/fox_cities/mueller-to-be-sentenced-for-girlfriends-death(Note, the father pleading for just the possibility of parole is his adoptive father, the mother who is charged in the case, and who's apartment where the murder took place is the birth mother with whom he'd reunited as an adult. The MSM news story, in usual fashion, does a piss poor job of explaining this.)
I know the plural of anecdote is not data. However, stuff like this in my own life, and cases like the separated twins who have the same type of job, the same car, wives with the same name, and even the same breed of dog... tells me that genetics/biology is HUGELY powerful in who we are and what we do...
However, we are sentient/sapient beings. And part of being self-aware is to recognize and work with and against our inborn traits. This is what separates us from the animals. Some of the great apes and other animals may have tools, arguably, some have language of sorts too. Despite that, none of them have any social constructs that aim to override their instincts to bring harm and mayhem to others when their instincts drive them to it.
That's what it truly means to be human.