If, on the other hand, it profited the young of an animal to follow habits of life slightly different from those of the parent-form, and consequently to be constructed on a slightly different plan, or if it profited a larva already different from its parent to change still further, then, on the principle of inheritance at corresponding ages, the young or the larvae might be rendered by natural selection more and more different from their parents to any conceivable extent.
Aitzitik, baldin animalia jakin baten kumeentzat onuragarri balitz guraso formaren aztura ezberdin samarrei jarraitzea eta, beraz, plan ezberdin samarraren arabera eratua gertatzea, edo baldin jada helduarengandik bereizia den larba batentzat onuragarri balitz oraindik gehiago aldatzea, orduan, dagozkien adinetako herentziaren hastapenaren arabera, kumea eta larba beren gurasoengandik gero eta ezberdinago bilakatuz joanen lirateke, burura daitekeeneino, hautespen naturalaren eraginez.