G-banding homologies of some Australian rodents

G-banding comparisons of 26 species in 10 genera of three tribes of Australian rodents show that at least one representative of each of the three tribes has autosomal complements that are indistinguishable on G-banding, implying unusually high conservation of karyotypes. Three genera (Pseudomys, Notomys , and Mastacomys ) are distinguished karyotypically by a reciprocal translocation, one genus (Uromys ) by a tandem fusion, and one genus (Zyzomys ) by a radically altered karyotype. The only other rearrangements identified from G-banding are pericentric inversions, all 12 of which involve breaks in the proximal area.