Strain-specific patterns of GO category enrichment.

GO category counts were obtained from Pfam domain annotations. Enrichment was determined by comparing category counts between transcripts. Enrichment in sexual animals was determined by comparing category counts between the sexual-specific/sexual-biased and unbiased categories; enrichment in asexual animals was determined by comparing the asexual-specific/asexual-biased and unbiased categories (transcripts that showed unbiased expression were used as the control set). The test for significance was performed using the Chi-square test. P-values were adjusted using the Bonferroni correction.