Ah the ol' nature vs nurture debate.
No one's quite figured that out yet, but I'm sure it's partially possible.
I grew up in foster care, I have no idea who my parents were, or what traits I may have inherited from them. I don't care. MY responsibility is to address what I know now about myself. I have to move forward, and live my life addressing ME, not my history, not epidemiology of any issues I have. I live the best I can. I can't carry a crutch to rationalize addiction or personality issues. I get help, I get therapy, I live honestly and with good intention. It's all I can do.