cases of instincts almost identically the same in animals so remote in the scale of nature that we cannot account for their similarity by inheritance from a common progenitor, and consequently must believe that they were independently acquired through natural selection.
instintu ia berberen kasuak natur eskalan hain urrun dauden animaliengan, non haien antzekotasuna arbaso komun batengandiko herentziaz azaltzerik ez dagoen, sinetsi beharra dugularik, beraz, bakoitzak bere aldetik erdietsirikoak direla hautespen naturalaren bidez.