This suspicion of gene/behavior links exists because of the pseudoscientific genetics used to justify various “isms,” prejudice, and discrimination. Such pseudoscience has fostered racism and sexism, birthed eugenics and forced sterilizations, allowed scientifically meaningless versions of words like “innate” to justify the neglect of have-nots. And monstrous distortions of genetics have fueled those who lynch, ethnically cleanse, or march children into gas chambers.fn1
Robert Sapolsky
Behave: The Biology of Humans at Our Best and Worst