But when many men, without intending to alter the breed, have a nearly common standard of perfection, and all try to procure and breed from the best animals, improvement surely but slowly follows from this unconscious process of selection, notwithstanding that there is no separation of selected individuals.
Baina gizakume askok, arraza aldarazteko asmorik gabe, eredu hobezin berdintsua dutenean eta guztiak animalia onenak edukitzen eta haietatik kumeak erdiesten ahalegintzen direnean, hautespen prozesu inkontziente honetatik, astiro baina seguru, hobekuntza dator, kasu honetan hautetsiriko animalien banaketarik ez dagoen arren.