Figure 5.

Cluster analysis of the allele-specific expression ratios of X-linked genes in F1 progeny from AKR and PWD reciprocal crosses. Based only on the differential allelic expression, genes are clustered using a standard nested agglomerative hierarchical clustering (see text for details). The large cluster of genes to the left are all subject to normal X inactivation, while the genes that escape X inactivation fall on the deeper branches to the right.

Wang et al. Genome Biology 2010 11:R79   doi:10.1186/gb-2010-11-7-r79
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