But, by steps hereafter to be explained, the larger genera also tend to break up into smaller genera. And thus, the forms of life throughout the universe become divided into groups subordinate to groups.
Baina mailaz maila, gero azalduko den moduan, genero handiagoak genero txikiagoetan banatzeko joera dute eta, era honetan, unibertso guztian, forma organikoak beste talde batzuei menperaturiko taldeetan banaturik gelditzen dira.