TABLE 2.

Significance of population differentiation

Populations comparedProbabilityaProbability agglomerated by 6-bp differencebProbability agglomerated by 6-bp majority- type differencec
Bovine and chicken0.000000.000000.00011
Bovine and human0.000000.000000.00017
Bovine and swine0.000000.000000.00001
Bovine and other0.000010.001690.01337
Chicken and human0.135590.513760.44640
Chicken and swine0.000010.002450.00205
Chicken and other0.055100.246090.21289
Human and swine0.000000.000000.00000
Human and other0.261260.579260.48877
Swine and other0.000000.000750.00496
  • a P values calculated from haplotype frequencies in each population using GENEPOP with the null hypothesis that the two populations are indistinguishable. A P value of <0.05 indicates significant differentiation of the two populations.

  • b Probabilities calculated from haplotype data with isolates agglomerated by differences of up to 6 base pairs (i.e., a single haplotype includes all individuals that are different from any other member of the haplotype by six or fewer base pairs).

  • c Probabilities calculated from haplotype data with isolates agglomerated by differences of up to 6 base pairs with all the disparate haplotypes left out of the calculations.