Table 5.

Partitioning of variation within and among groups and clusters in fig (average over 15 loci)

Source of variation	df	Sum of squares	Variance components	Percentage variation	Fixation index
Among clusters	2	48.830	0.11148	2.87	0.130**
Among groups within clusters	7	92.705	0.39216	10.11	0.104**
Within groups	254	857.798	3.37716	87.02	0.022*
Total	263	999.333	3.88080

df degrees of freedom

^{**, *} P < 0.01 and 0.05, respectively based on 1,023 permutations