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. 2014 Mar 13;10(3):e1004223. doi: 10.1371/journal.pgen.1004223

Figure 6. Contribution of neo-sex chromosomes to the evolution of sex and species differences in gene expression.

Figure 6

(A) Proportion of male-biased and female-biased genes for autosomes, LG9, and LG19. (B) No significant correlation between sex differences in CGH signals and sex differences in expression levels. (C) Significant correlation between the proportion of heterozygous SNPs in the 10-kb upstream of genes and sex differences in expression levels. (D) Proportion of genes differentially expressed between species for each sex. A Grubbs' outlier test was conducted to investigate whether LG9 and LG19 are outliers of all other linkage groups: *, P<0.05; **, P<0.01; ***, P<0.001. For autosomes, means ± S.E. are shown.