Evolutionary Conservation of Whole Homeologous Chromosome Arms in the Akodont Rodents Bolomys and Akodon (Muridae, Sigmodontinae): Maintenance of Interstitial Telomeric Segments (ITBs) in Recent Event of Centric Fusion (original) (raw)

Abstract

We have identified the almost complete correspondence of whole chromosome arms between the karyotypes of Bolomys lasiurus (2n = 33, 34) and Akodon montensis (2n = 24, 25) using comparative analysis of the GTG-banding patterns. To explain the karyotypic differentiation of the species, tandem and centric fusions, pericentric inversions, loss of telomeres and centromeres are required. Localization of telomere sequences using an (TTAGGG)n oligomere as a fluorescence in situ hybridization probe provided evidence of the maintenance of interstitial telomere sequences in a polymorphic centric fusion of recent origin in Bolomys lasiurus. The homeologies shared between the chromosomes of these two species and those of A. cursor (2n = 16), from previous work, are discussed.

Access this article

Log in via an institution

Subscribe and save

Buy Now

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Similar content being viewed by others

Author information

Authors and Affiliations

  1. Departamento de Biologia, Instituto de Biociências, Universidade de São Paulo, CP 11.461, CEP, 05422-970, São Paulo, SP, Brazil
    Valéria Fagundes & Yatiyo Yonenaga-Yassuda

Authors

  1. Valéria Fagundes
  2. Yatiyo Yonenaga-Yassuda

Rights and permissions

About this article

Cite this article

Fagundes, V., Yonenaga-Yassuda, Y. Evolutionary Conservation of Whole Homeologous Chromosome Arms in the Akodont Rodents Bolomys and Akodon (Muridae, Sigmodontinae): Maintenance of Interstitial Telomeric Segments (ITBs) in Recent Event of Centric Fusion.Chromosome Res 6, 643–648 (1998). https://doi.org/10.1023/A:1009213712370

Download citation