Critics of neo-Lamarckism, such as the German biologist August Weismann and Alfred Russel Wallace, pointed out that no one had ever produced solid evidence for the inheritance of acquired characteristics.
Kritičari neolamarkizma poput njemačkog biologa Augusta Weismanna i Alfreda Russela Wallacea isticali su da nitko do tada nije stvorio čvrst dokaz za nasljeđivanje stečenih karakteristika.