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Fig. 4 | BMC Evolutionary Biology

Fig. 4

From: Selection shapes turnover and magnitude of sex-biased expression in Drosophila gonads

Fig. 4

Box plots showing the distribution of the fold sex-bias for genes over time. a) Fold testis-biased expression for genes with lineage-specific transitions (LSTs) and with clade-wide testis-bias in four Drosophila species; b) the equivalent results to a for ovary-biased genes; c) fold testis-biased expression for genes with LSTs, with conserved bias in the three species ingroup (TSI) clade, and with clade-wide testis-biased expression; d) the equivalent results to c for ovary-biased genes. The minimum or maximum divergence time (My) is shown for each bar. Different letters below each bar per pair in a and b are statistically significantly different (MWU-P < 0.05) and in each triplet in c and d (Ranked ANOVA and paired Dunn’s test P < 0.05). The fold sex-bias for each of the eight testis-biased genes sets (eight bars) in panel a was higher than its ovary counterpart in panel b (MWU-P < 0.05). Note the Y-axes are in log scale and have different upper limits in panels. Clade-wide biases are shown in dark blue and red and LSTs with standard blue and red. TSI genes in panels c and d have crossbars

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