ST 0.50

This result says that there is somewhat less hetero-zygosity on average for the two subpopulations compared with the heterozygosity expected in the ideal case where the entire population is panmictic. This is consistent with the fact that the two subpopulations have slightly different allele frequencies and each has an expected heterozygosity of slightly less than V2. However, the total population would have a heterozygosity of V2 (the maximum) if there was no allele frequency divergence between the two subpopulations.

The final level in the hierarchy is FIT, the comparison of the average observed heterozygosity for subpopulations with the heterozygosity expected for the total population:

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