Table 1 The frequency of genes with sex-specific expression in testes and ovaries in each species of Drosophila. The percentage of the sex-biased gene sets represented by sex-specific genes (zero expression in the opposite sexual organ) is shown. The number of clade-wide testis-specific genes, which were specific in all four species, was 171 and there were no clade-wide ovary-specific genes. Chi2 tests of the percentage of testis- versus ovary-specific genes per species P < 0.0001 for each species. Sex-biased expression and sex-specificity was determined by inter-gonadal contrasts
From: Selection shapes turnover and magnitude of sex-biased expression in Drosophila gonads
Category | No. of Genes per Species | ||||||||
|---|---|---|---|---|---|---|---|---|---|
Dmel | Dsim | Dyak | Dana | Clade-Wide Specificity | |||||
N | Percenta | N | Percent | N | Percent | N | Percent | N | |
No. of Testis-Specific Genes | 692 | 20.85 | 870 | 24.72 | 538 | 13.86 | 1,172 | 34.90 | 171 |
No. of Ovary-Specific Genes | 17 | 0.48 | 6 | 0.18 | 9 | 0.29 | 8 | 0.22 | 0 |