When it is explained how genera originate under nature, it will be seen that we have no right to expect often to find a generic amount of difference in our domesticated races.
Generoak naturan nola sortzen diren inoiz azaltzen bada, orduan ikusiko da ez daukagula eskubiderik gure etxe-arrazetan genero mailako alderik sarri aurkitzea espero izateko.