Table 2.
Expression polymorphism in sex-biased genes
| Sex-bias classification | |||
|---|---|---|---|
| Feature | Female | Male | Unbiased |
| Number of genes on array | 4002 | 2572 | 5988 |
| Percentage of genes detected as expressed | 56.1* | 36.5* | 44.8 |
| Percentage of expressed genes: | |||
| Polymorphic in Europe | 5.1 | 5.1 | 4.6 |
| Polymorphic in Africa | 8.0 | 9.3 | 8.5 |
| Polymorphic overall | 23.8 | 24.4 | 24.7 |
| Differentially expressed between populations | 8.4† | 10.9 | 11.6 |
| Average percentage of pairwise differences: | |||
| Within Europe | 0.16 | 0.18 | 0.17 |
| Within Africa | 0.25 | 0.32 | 0.30 |
| Overall | 0.65 | 0.87 | 0.79 |
Genes were classified using the 5% FDR meta-analysis of the Sebida database [27]. *Significantly different from unbiased genes (FET, P < 0.0001). †Significantly different from male-biased (FET, P < 0.05) and unbiased (FET, P < 0.001) genes.