so far from the null hypothesis (of homogeneity) that substantial divergence is obvious by inspection.


A statistically significant difference is not necessarily biologically meaningful. With large-enough sample sizes, any difference could be statistically significant. The results of the studies reviewed here are highly statistically significant. The question is whether the differences are large enough to be biologically useful. The assignment tests in Tables 3–5 show that the multiple-locus gene pools of the various populations are substantially nonoverlapping. The differences are large and strongly suggest biologically important genetic isolation among the populations.

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