TABLE 2

Summary data and test statistics for polymorphism and divergence of silent and replacement changes in the four hexokinase genes in D. melanogaster, D. simulans, and D. yakuba

Hex-AHex-CHex-t1Hex-t2
D. melanogaster
    Silent polymorphisms2122724
    Replacement polymorphisms0424
    Tajima's D–0.5321.4020.5090.073
    Fu and Li's D–0.5400.8970.838–0.306
D. simulans
    Silent polymorphisms0102715
    Replacement polymorphisms0013
    Tajima's D1.876–1.2530.502
    Fu and Li's D1.570*–0.8370.553
Interspecific divergence
D. melanogaster/D. simulans
    Silent fixed differences20272141
    Replacement fixed02813
    McDonald-Kreitman test (P)0.406a0.006a0.322ass
    Ka/Ks0.0000.0210.0650.077
D. melanogaster/D. yakuba Ka/Ks0.0000.0380.0840.110
D. simulans/D. yakuba Ka/Ks0.0000.0570.1040.128
  • * P < 0.05.

  • a Probability associated with G-test.