Molecular Biology and Evolution, Vol 16, 1763-1773, Copyright © 1999 by Society for Molecular Biology and Evolution
C Riginos and MW Nachman
The western European house mouse, Mus domesticus, includes many distinct
Robertsonian (Rb) chromosomal races. Two competing hypotheses may explain
the distribution of Rb translocations found in different populations: they
may have arisen independently multiple times, or they may have arisen once
and been spread through long-distance dispersal. We investigated the origin
of the Rb 5.15 translocation using six microsatellite loci linked to the
centromeres of chromosomes 5 and 15 in 84 individuals from three Rb
populations and four neighboring standard-karyotype populations.
Microsatellite variation on the 5.15 metacentric chromosomes was
significantly reduced relative to the amount of variation found on
acrocentric chromosomes 5 and 15, suggesting that linked microsatellite
loci can track specific mutational events. Phylogenetic analyses resulted
in trees which are consistent with multiple origins of the 5.15 metacentric
chromosomes found in the three Rb populations. These results suggest that
cytologically indistinguishable mutations have arisen independently in
natural populations of house mice.
ORIGINAL ARTICLE
The origin of a Robertsonian chromosomal translocation in house mice inferred from linked microsatellite markers
Department of Ecology and Evolutionary Biology, University of Arizona, Tucson 85721, USA. riginos@u.arizona.edu
![]()
CiteULike
Connotea
Del.icio.us What's this?
This article has been cited by other articles:
![]() |
D. Dumas and J. Britton-Davidian Chromosomal Rearrangements and Evolution of Recombination: Comparison of Chiasma Distribution Patterns in Standard and Robertsonian Populations of the House Mouse Genetics, November 1, 2002; 162(3): 1355 - 1366. [Abstract] [Full Text] [PDF] |
||||
