Table 1.
Summary statistics of polymorphism and divergence for the different classes of sites. (S is the number of segregating sites; π and θW are the standard measures of the nucleotide diversity based on the mean pairwise divergence per nucleotide site between alleles and the number of segregating sites, respectively; D is the number of fixed differences between D. virilis and D. americana; KJC is the mean Jukes–Cantor-corrected divergence from D. virilis; and DT is Tajima's D statistic.)
| category | S | π (%) (s.e.) | θW (%) (s.e.) | D | KJC (%) (s.e.) | DT (s.e.) |
|---|---|---|---|---|---|---|
| introns | 803 | 2.17 (0.23) | 2.32 (0.22) | 609 | 9.98 (0.92) | −0.75 (0.09) |
| synonymous | 173 | 1.96 (0.56) | 1.77 (0.32) | 245 | 9.84 (1.01) | −0.73 (0.13) |
| non-synonymous | 29 | 0.09 (0.03) | 0.11 (0.03) | 68 | 0.78 (0.22) | −0.93 (0.20) |