Table 1.

Expression of X-Linked Genes Classified by Y Functional Class.

Note.—NS, not significant. Pairwise ratios of the median expression of X-linked genes with functional Y-linked gametologs (g), pseudogenized Y gametologs (p), or lost Y gametologs (l) in the XAR and the XCR. Cases where the ratio in expression abundance was >2, indicating that the class of X-linked genes in the numerator is expressed at least 2-fold greater than those in the denominator, are colored in red. Ratios lower than 0.5, indicating the X-linked genes in the numerator, are expressed at least 2-fold lower than those in the denominator, are colored in blue (supplementary note S1, Supplementary Material online). P values <0.1 from a permutation test with 10,000 replicates are shown below each comparison in italics, and those that are significant at a 0.05 level, before Bonferroni correction, are underlined.