My Genes Made Me Do It: Biological Determinism

The notion that human behavior is shaped primarily by our hereditary predispositions has become a powerful force in Western thought in the past century.  Many sociobiologists and evolutionary psychologists today claim that behaviors, such as kindness, marital bonding, and self-sacrifice, but also marital infidelity, incest, infanticide, abortion, and even rape are programmed into our psyche by our evolutionary heritage.  This reduces human agency and relativizes morality.