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Structural Dynamics of Eukaryotic Chromosome Evolution
Evan E. Eichler1* and
David Sankoff2
Large-scale genome sequencing is providing a comprehensive viewof the complex evolutionary forces that have shaped the structureof eukaryotic chromosomes. Comparative sequence analyses revealpatterns of apparently random rearrangement interspersed withregions of extraordinarily rapid, localized genome evolution.Numerous subtle rearrangements near centromeres, telomeres,duplications, and interspersed repeats suggest hotspots foreukaryotic chromosome evolution. This localized chromosomalinstability may play a role in rapidly evolving lineage-specificgene families and in fostering large-scale changes in gene order.Computational algorithms that take into account these dynamicforces along with traditional models of chromosomal rearrangementshow promise for reconstructing the natural history of eukaryoticchromosomes.
1 Department of Genetics, Center for Human Genetics and Center for Computational Genomics, Case Western Reserve University School of Medicine and University Hospitals of Cleveland, Cleveland, OH 44106, USA. 2 Department of Mathematics and Statistics, University of Ottawa, 585 King Edward Avenue, Ottawa, ON Canada, K1N 6N5.
* To whom correspondence should be addressed. E-mail: eee{at}po.cwru.edu
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