title: Sex-chromosome heterochromatin variation in the wood mouse, Apodemus sylvaticus.
abstract: Variation in heterochromatin content, as revealed by G- and C-banding, was studied in the sex chromosomes of the wood mouse, Apodemus sylvaticus. The sex-chromosome heterochromatin was also characterized by DAPI staining. Variation in sex chromatin was recorded in extremely large (giant) sex chromosomes in certain individuals and populations. In some individuals, the Y chromosome was the largest element of the complement. Different variants of both the X and Y chromosomes were found within a single population. The variation is therefore a type of population polymorphism and should not be used for taxonomic discrimination.
authors.affiliation: Department of Zoology, Faculty of Science, Charles University, Prague, Czech Republic.
authors.forename: P
authors.initials: P
authors.lastname: Nová
authors.forename: B A
authors.initials: BA
authors.lastname: Reutter
authors.forename: M
authors.initials: M
authors.lastname: Rábová
authors.forename: J
authors.initials: J
authors.lastname: Zima
mesh_terms: D000818:Animals; D014644:Genetic Variation; D006570:Heterochromatin / Q000235:genetics*; D007621:Karyotyping; D008297:Male; D009115:Muridae / Q000235:genetics*; D012730:Sex Chromosomes / Q000235:genetics*
chemical_list: D006570:Heterochromatin