We have plenty of cases of rudimentary organs in our domestic productions, as the stump of a tail in tailless breeds, the vestige of an ear in earless breeds of sheep-the reappearance of minute dangling horns in hornless breeds of cattle, more especially, according to Youatt, in young animals-and the state of the whole flower in the cauliflower.
Aztarna-organoen adibide ugari dugu gure etxabereetan: buztangabeko arrazen buztanondoa, belarrigabeko ardi arrazen aztarna-belarriak, adargabeko ganadu arrazetan berragertzen diren adar-gingilak (kumeetan bereziki, Youatt-ek dioenez) eta lore osoaren egoera azalorean.