Table 2. Maximum-likelihood-ratio Hudson–Kreitman–Aguade test of selection at the base of the X chromosome
Form Model In L Likelihood-ratio statistic (df) P value
M A. Neutral –102.3
B. Selection on all loci in division 5 and 6 –94.2 A vs. B, 16.2 (10) NS
C. Selection on six loci in division 5 and 6 –92.9 A vs. C, 18.8 (6) <0.01
S A. Neutral –102.3
B. Selection on all loci in division 5 and 6 –95.6 A vs. B, 13.4 (10) NS
C. Selection on six loci in division 5 and 6 –95.0 A vs. C, 14.6 (6) <0.05
  • Model C for form M includes loci 07824(5A), 13589(5D), 13522(5D), 04170(6), forked(6), and 14481(6). Model C for form S includes loci 07824(5A), 07907(5A), 04100(5C), 13589(5D), forked(6), 14481(6). NS, not significant; –, not applicable.