(Ray is reading his dad's DNA profile and finds out he has monoamine oxidase A gene)
Wendy (walks in and sees monoamine oxidase A on the file, but nothing else): Ooh, monoamine oxidase A. Ask me anything. What do you wanna know?
Ray: What do you know about it?
Wendy: Kind of a lot. My research group in grad school developed a protocol to synthesize the gene. What's the case?
Ray: It's just something that I'm working on.
Wendy: You know, that specific mutation there has actually been linked to violence. For example, there was this Dutch family, and all the males who had that were rapists or arsonists. And in mice without the MOA gene all exhibited highly aggressive behavior.
Ray (gets up and starts to walk off): MOA deficiency doesn't make you violent.
Wendy: I didn't say it did.
Ray (as he's walking out): Just because something might happen doesn't mean it will. It's genetics, not destiny.