In the book In Cold Blood, Perry Smith and Dick Hickock are two of the main characters who murdered a small family that lived in a small town in Kansas. A major question while reading this book is why. Why would two people want to murder this family? This is where the ted talk comes in. Jim Fallon is a neuroscientist, who studied behavior on the basis of everything from genes through neurotransmitters, and analyze a bunch of brains of psychopathic killers. Fallon was explaining how people become a psychopath, or a killer usually depends on the genes. He also said a thing about the MAO-A gene. It is a major violent gene. It can only get passed down from the mother because it comes from the X chromosome. A girl is least likely to get the MAO-A gene because she gets one X from the father, one X from the mother,so it kind of dilutes it out. He furthermore goes on to say the MAO-A gene commonly comes from the line of family members. We can suppose why Dick and Perry are murderers because they might of had killers in their families.
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