DeVries himself allowed a role for natural selection in determining which new species would survive, but some geneticists influenced by his work, including Morgan, felt that natural selection was not necessary at all.
O propio DeVries dáballe un papel no proceso á selección natural na determinación de que novas especies sobrevivirían, pero algúns xenetistas influídos polo seu trabllo, incluíndo Morgan, pensaban que a selección natural non era en absoluto necesaria.