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Fractionation, rearrangement and subgenome dominance

by: David Sankoff, Chunfang Zheng
Bioinformatics, Vol. 28, No. 18. (15 September 2012), pp. i402-i408, doi:10.1093/bioinformatics/bts392  Key: citeulike:11550825

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Abstract

Motivation: Fractionation is arguably the greatest cause of gene order disruption following whole genome duplication, causing severe biases in chromosome rearrangement-based estimates of evolutionary divergence.Results: We show how to correct for this bias almost entirely by means of a ‘consolidation’ algorithm for detecting and suitably transforming identifiable regions of fractionation. We characterize the process of fractionation and the performance of the algorithm through realistic simulations. We apply our method to a number of core eudicot genomes, we and by studying the fractionation regions detected, are able to address topical issues in polyploid evolution.Availability and implementation: Code for the consolidation algorithm, and sample data, is available at: http://137.122.149.195/Software/Fractionation/fractionation.htmlContact: sankoff@uottawa.ca


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