title: Telomeric sequences localization and G-banding patterns in the identification of a polymorphic chromosomal rearrangement in the rodent Akodon cursor (2n=14,15 and 16).
abstract: Akodon cursor is an exceptional example of high chromosomal variability, displaying diploid numbers from 14 to 16 and fundamental numbers (FN) from 18 to 26 as the result of a complex rearrangement in par 1 and pericentric inversions in three autosomal pairs. The difference in the diploid number is due to the presence of a large metacentric pair 1 in the 2n=14 karyotype, a large metacentric 1 and two different submetacentrics (1a and 1b) in 2n=15 and 1a and 1b submetacentric pairs in homozygosis in the 2n = 16 karyotype. Chromosomes 1a and 1b share homology with the short and long arms of the large metacentric 1 respectively. In this paper, evidence based on fluorescence in situ hybridization (FISH) with telomeric sequences and G-banding indicates that pericentric inversions and fusion of chromosomes 1a and 1b are the probable rearrangements giving rise to the large metacentric 1.
authors.affiliation: Departamento de Biologia, Instituto de Biociências, Universidade de São Paulo, Brazil. vfagunde@usp.br
authors.forename: V
authors.initials: V
authors.lastname: Fagundes
authors.forename: A M
authors.initials: AM
authors.lastname: Vianna-Morgante
authors.forename: Y
authors.initials: Y
authors.lastname: Yonenaga-Yassuda
mesh_terms: D000818:Animals; D003411:Arvicolinae / Q000235:genetics*; D002871:Chromosome Banding; D007446:Chromosome Inversion; D002875:Chromosomes / Q000235:genetics* / Q000648:ultrastructure; D005260:Female; D017404:In Situ Hybridization, Fluorescence; D007621:Karyotyping; D008297:Male; D011110:Polymorphism, Genetic; D016615:Telomere / Q000235:genetics*