title: [The clinal variability of the B-chromosome system in the East Asian mouse Apodemus peninsulae from Buryatia and Mongolia].
abstract: Karyological investigation of 22 East-Asiatic mice from different points of the North Mongolia showed the availability in all the mice from 1 to 13 B chromosomes, including from 1 to 5 middle-sized and small two-shoulder chromosomes, from 0 to 11 dot-like B chromosomes, and, seldom, 1 small acrocentric B chromosome. Nearly every mouse is characterized by its variant of B-chromosome system. Most frequent mice with 3, 4 and 8 B chromosomes were met. The comparison of the B-chromosome system variants in mice from Buryatia, Chita Province (USSR) and the North Mongolia, showed an increase in the number of B chromosomes, mainly at the expense of the number of dot-like B chromosomes, in the direction from Ulan-Ude to the south and to the east.
authors.forename: Iu M
authors.initials: IuM
authors.lastname: Borisov
authors.forename: V M
authors.initials: VM
authors.lastname: Malygin
mesh_terms: D000818:Animals; D001853:Bone Marrow / Q000648:ultrastructure; D002875:Chromosomes / Q000648:ultrastructure*; D005260:Female; D014644:Genetic Variation; D007621:Karyotyping; D008297:Male; D008677:Metaphase; D008986:Mongolia; D009115:Muridae / Q000235:genetics*; D012800:Siberia; D013045:Species Specificity
vernacular_title: Klinal'naia izmenchivost' sistemy B-khromosom vostochnoaziatskoĭ myshi Apodemua peninsulae iz Buriatii i Mongolii.