It has been proposed that under circumstances when the advantages of inbreeding outweigh the disadvantages, preferential breeding within small groups could be promoted, potentially leading to speciation.
Propúxose que nas circunstancias nas que as vantaxes da endogamia superan as desvantaxes, podería promoverse a crianza preferencial dentro de grupos pequenos, e isto podería levar a un evento de especiación.