Table 2

The total observed (O) and expected (E) numbers of heterozygotes and homozygotes for the four types of matings that potentially segregate for homozygotes and the estimated selective difference between heterozygotes and homozygotes

LocusFemale × MaleHeterozygotes Homozygotes χ2s
OEOE
HLA-A AiAj  ×  AiAk169151.503350.508.08**0.418
AiAi  ×  AiĀi3938.503838.500.01(0.050)
AiĀi  ×  AiAi3426.501926.504.25*0.457
AiAj  ×  AiAj5640.002440.0012.80***0.579
 Total298256.50114155.50
HLA-B AiAj  ×  AiAk140132.753744.251.58(0.213)
AiAi  ×  AiĀi3633.003033.000.54(0.189)
AiĀi  ×  AiAi3726.001526.009.31**0.605
AiAj  ×  AiAj5541.502841.508.78**0.500
 Total268233.25110144.75
  • Values of s are given in parentheses when χ2 was not significant. ∗, P < 0.05; ∗∗, P < 0.01; ∗∗∗, P < 0.001.