english: But nowadays, the millions  of queen bees distributed in commercial hives are bred  from just a few original queens, which raises the worry about  a lack of genetic diversity which could weaken bees' defenses  against pathogens and pests.
non_english: Danas, od milion matica  koje se distribuiraju u košnice, samo malo njih potiče od originalnih matica, i zato se javlja sumnja o manjku genetske različitosti, što može da oslabi otpornost protiv patogena i štetočina.