Chromosome banding pattern in a polymorphic population of Sorex araneus from northeastern Finland.

  title={Chromosome banding pattern in a polymorphic population of Sorex araneus from northeastern Finland.},
  author={L. Halkka and O. Halkka and U. Skar{\'e}n and V. S{\"o}derlund},
  volume={76 2},
Karyotypes from 14 males of Sorex araneus from Kuusijoki, NE Finland, were investigated and found to represent chromosome race C, as defined by Fredga in 1973. The population was found to be polymorphic and show frequencies of cytological types close to a Hardy-Weinberg equilibrium. The polymorphism was slightly more restricted than in another race C population investigated by Fredga. Q and ASG stainings were used for the first time to obtain banding patterns in the chromosomes of the genus… Expand
Genetic differentiation in Sorex. I. Electrophoretic analysis of the karyotypic races of Sorex araneus in Sweden.
Comparison of this result with information from other chromosomally variable mammalian species shows that normally only small electrophoretic differences exist between karyotypic races belonging to the same species. Expand
Nomenclature for the chromosomes of the common shrew (Sorex araneus)
A G-band composite karyotype has been prepared for the common shrew that includes multiple cut-outs of each chromosome arm derived from chromosome spreads prepared by a variety of methods by the different authors. Expand
Chromosome races of the common shrew Sorex araneus in Poland: a model of karyotype evolution
Five distinct chromosome races of the common shrew Sorex araneus Linnaeus, 1758 including different metacentrics with monobrachial homology have been found in Poland. Their karyotypes includeExpand
The karyology of the Common shrew, Sorex araneus Linné, 1758 (Insectivora, Soricidae) in southwestern Germany
It is suggested that the smaller autosomal arms are subject to weaker selection pressure to be fixed as metacentrics in central populations of a chromosomal race in contrast to those living in contact zones of different chromosomal races. Expand
The chromosome complement of Sorex granarius–the ancestral karyotype of the common shrew (Sorex araneus)?
This work presents the G-band karyotype of Sorex granarius (Miller, 1910), and urges breeding studies to establish whether the designation of S. granarius as a full species is justified. Expand
The hypothetical Old-Northern chromosome race of Sorex araneus found in the Ural Mts.
Chromosomes of two populations of the common shrew from the northern Ural Mts. Expand
Chromosomal polymorphism and racial evolution of Sorex uruneus L. in Finland
Six chromosomal races with different combinations of arms, g, h, k, m, n, o, q and r were found to form chromosomes nos 3,5,7 and 8, suggesting that these races may have evolved from a common ancestral karyotype through a series of reciprocal translocations. Expand
Factors responsible for a karyotypic polymorphism in the common shrew, Sorex araneus
  • J. Searle
  • Biology, Medicine
  • Proceedings of the Royal Society of London. Series B. Biological Sciences
  • 1986
A Robertsonian karyotypic polymorphism in the common shrew in the Oxford area, first described in the 1950s, was re-examined and it is proposed that this is a source of selection against the monobrachial hybrids and hence results in an increase in frequency of the acrocentric morphs. Expand
Invalidation of Stobnica chromosome race of the common shrewSorex araneus
There is strong evidence that thenp arm combination was wrongly described and thus the Stobnica race should not be considered valid. Expand
The number of karyotypic variants in the common shrew (Sorex araneus)
The number of theoretically possible karyotypic variants in the common shrew is calculated and about 30 different homozygous karyotypes containing metacentric and acrocentric autosomes have actually been found in natural populations. Expand


Chromosome Polymorphism in the Common Shrew
Examining the chromosomes of five common shrews from Buckland in Berkshire and one from the neighbourhood of Lake Vyrnwy in North Wales confirmed Bovey's report that there are three sex chromosomes in the male, and made the surprising observation that the diploid number of chromosomes varied from 22 to 25 in different individuals. Expand
Chromosomes of the Common Shrew
Study of four male and two female shrews collected in Britain confirms the presence of a sex- chromosome trivalent in the male and shows that the female has but two sex-chromosomes (XX). Expand
Les chromosomes des Sorex du groupe araneus-arcticus (Mammalia, Insectivora)
A chek list and atlas of the mammals of Botswana (Africa), Trustees of The mammals of South Africa Book Fund, Johannesburg. Expand
Chemical differentiation with fluorescent alkylating agents in Vicia faba metaphase chromosomes.
A bifunctional highly fluorescent quinacrine mustard was shown to give chromosome breaks preferentially localized to heterochromatic chromosome regions (identifiable by cold treatment) in the M-chromosome. Expand