Hence, if any one species of grass were to go on varying, and the varieties were continually selected which differed from each other in the same manner, though in a very slight degree, as do the distinct species and genera of grasses, a greater number of individual plants of this species, including its modified descendants, would succeed in living on the same piece of ground.
Hemendik, baldin zeinahi belar espezie aldatuz joanen balitz eta belar espezie eta genero ezberdinen modura, nahiz eta gradu txikian, elkarrengandik ezberdinak liratekeen aldakiak etengabe hautetsiko balira, espezie honetako landare kopuru handiagoak, ondorengo eraldatuak ere barne, lortuko luke soro-arlo berean bizitzea.