Eugenics is a false science because it makes demonstrably false assumptions about human reproduction, not because it says genetics influences behavior.
eu·gen·ics Audio pronunciation of "Eugenics" ( P ) Pronunciation Key (y-jnks)
n. (used with a sing. verb)
The study of hereditary improvement of the human race by controlled selective breeding.
--- I think it all goes back to Eugenics. Those right wing church going crazies have it in their blood so to speak.