[CarolinaGuitarman]

"They took what they could understand from the evolutionary theories of their day. They didn't know about DNA."

They knew about Mendel though, and eugenics owes at least as much ( I would argue more, as the eugenics movement didn't take off until after Mendel's ideas became rediscovered in 1900) to his work as to Darwin's. Oh those evil Mendelians!

[Heartlander]

FYI…
And
FYI…