Rates of Sex Chromosome Loss during Development in Different Tissues of the Bandicoots Perameles nasuta and Isoodon macrourus (Marsupialia: Peramelidae)

Abstract

An X chromosome disappears from female cells and the Y chromosome from male cells of some somatic tissues of all peramelid bandicoots, leaving cells with a 2n = 13 (i.e. XO) chromosome complement. The patterns of loss, which differ among tissues and species, were studied during development of specimens of P. nasuta and /. macrourus.