Constitutive heterochromatin and karyotype variation in Indian pygmy mouse, Mus dunni

Abstract

The Indian pygmy mouse, Mus dunni, exhibits great variation in the number of chromosome arms while its diploid number of chromosomes remains constant. The variation seems to be due to addition or deletion of C-band positive constitutive heterochromatin in the short arms of autosomes. © 1975, Cambridge University Press. All rights reserved.