Karyotypic variation in Chilean lizards of the genusLiolaemus (Iguanidae)

Summary Most of 12 taxa karyotypes retain 6 pairs of metacentric macrochromosomes (primitive), but show reduced numbers of microchromosomes (2n=34, 32 and 30). Others whow increased diploid numbers due to macrochromosomal fissions (up to 4 fissions, 2n=40). One shows a fission polymorphism.We thank Dr. W.P. Hall for his many suggestions and comments; and L. Alvarez, E. Barrientos, I. Campos, M. Fernandez and F.N. Manzur for generous assistance. This study was aided by the Project del Servicio de Desarrollo Científico de la Universidad de Chile, No. B259-783.