Table 2.

Comparison of exact solution (E) for the variances of population gene frequencies in a 10-stone stepping-stone model for n = 10, m_∞ = 0.001, m = 0.1, N = 250, and p̄ = 0.2 with the approximation of this paper (F). Approximation F1 uses the value of σ² averaged over all populations. Approximation F2 uses a value of σ² calculated for that population. FS is the Fleming-Su approximation. As the migration pattern is symmetric, only the values for populations 1-5 are shown.

population	E	F1	F2	FS
1	0.02115	0.02127	0.02089	0.01396
2	0.01918	0.01924	0.01913	0.01207
3	0.01784	0.01784	0.01790	0.01087
4	0.01700	0.01697	0.01712	0.01016
5	0.01660	0.01655	0.01674	0.00984