TABLE 4

Contribution of each size class of variants to the θ-values

θwθΠ
Size classFrequencyObs.Exp.DifferenceObs.Exp.Difference
AllSize 1407.442.285.160.660.120.54
Size 1–10%101.864.80−2.940.461.25−0.79
Size 10–25%40.742.04−1.300.941.79−0.85
Size 25–75%112.052.51−0.465.193.671.52
Size 75–99%10.190.65−0.460.030.46−0.43
Total6612.2712.277.297.29
AfricansSize 1317.292.824.471.550.361.19
Size 1–10%92.122.35−0.230.970.690.28
Size 10–25%20.472.81−2.340.521.86−1.34
Size 25–75%92.123.19−1.074.183.800.38
Size 75–99%000.82−0.8200.51−0.51
Total5111.9911.997.227.22
AsiansSize 171.631.300.330.330.300.03
Size 1–10%40.931.40−0.470.540.86−0.32
Size 10–25%10.231.10−0.870.321.52−1.20
Size 25–75%112.561.421.145.073.231.84
Size 75–99%10.230.36−0.130.050.40−0.35
Total245.585.586.316.31
EuropeansSize 181.881.380.500.400.350.05
Size 1–10%20.471.15−0.680.240.67−0.43
Size 10–25%20.471.38−0.910.621.79−1.17
Size 25–75%112.591.571.025.313.651.66
Size 75–99%20.470.400.070.380.49−0.11
Total255.885.886.956.95
  • The observed θw and θΠ were obtained by Watterson's θw = K/an and Tajima's θΠ = ∑Πij/(n(n − 1)/2), respectively. The expected θw and θΠ were obtained from θw = K/an, where K is the expected variant sites in each class, and θΠ = θ∑(ni)/(n(n − 1)/2), respectively.