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. 2014 Jun 5;4(8):1429–1444. doi: 10.1534/g3.114.011759

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Copyright © 2014 Xiong et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution Unported License (http://creativecommons.org/licenses/by/3.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Some differentially expressed genes are not expressed in one or more founder strains. Of the 9149 DE genes, 2150 lacked expression in one or more founder strains. (A) Log-fold changes are shown as a heat map. The pattern of white space, which denotes nonexpression, clearly discriminates the founder strains. (B) Clustering the strains based on nonexpression pattern resulted in a graph resembling a previous phylogenetic tree computed from genetic variations of the founder strains (Yang et al. 2007).