title: [Multiplicity of B microchromosomes in a Siberian population of mice Apodemus peninsulae (2n = 48 + 4-30 B chromosomes)].
abstract: Differentiation of four Siberian populations of East-Asian (Korean) field mice (Apodemus peninsulae) inhabiting the basin of the mid-stream of the Yenisei River was carried out according to the variants of the B chromosome system. A multiplicity of B microchromosomes (from 4 to 30) was found for the first time in all 26 mice from the left shore of the Yenisei River in the mid-stream area. All of them probably belong to a population with B microchromosomes. It is likely that in this population further reorganization of B microchromosomes into B macrochromosomes typical of this species does not occur. Two mice from this population had a large number of B chromosomes (26) earlier not observed in this species. In one mouse, the modal number of B microchromosomes was 30. This is a new maximum number of B chromosomes in this mouse species.
authors: Iu M
authors: IuM
authors: Borisov
authors: A G
authors: AG
authors: Afanas'ev
authors: T T
authors: TT
authors: Lebedev
authors: M N
authors: MN
authors: Bochkarev
mesh_terms: D000818:Animals; D033481:Chromosomes, Mammalian / Q000235:genetics*; D005828:Genetics, Population; D051189:Murinae / Q000235:genetics*; D012800:Siberia