If, for instance, a bird of some kind could procure its food more easily by having its beak curved, and if one were born with its beak strongly curved, and which consequently flourished, nevertheless there would be a very poor chance of this one individual perpetuating its kind to the exclusion of the common form;
Ohar hauen zuzentasuna, nik uste, eztabaidagaitza da. Baldin, adibidez, txori espezieren batek moko okerra edukiz gero jatekoa errezago lortu ahal balu, eta txori bat moko oso okerrarekin jaio eta, ondorioz, arrakasta izanez gero, ahalbide gutxi legoke, hala ere, banako honek bere espeziea forma arrunta ezabatzeraino betikortzeko;