If it were no advantage, these forms would be left, by natural selection, unimproved or but little improved, and might remain for indefinite ages in their present lowly condition.
Abantailarik ez egotera, hautespen naturalak hobetu gabe utzi beharko lituzke forma hauek, edo gutxi hobetuko lituzke, eta aldi mugagabez gera daitezke egungo beren behe-mailan.