Table 1.

Analysis of molecular variance (AMOVA)

Source of variation	d.f.	Sum of squares	Variance components	Percentage of variation
Working dataset
Among populations	143	11,575,312.65	1618.40	15.19
Among individuals within pops	3053	28,326,327.21	241.44	2.27
Within individuals	3197	28,118,634.00	8795.32	82.54
Total	6393	68,020,273.86	10,655.16	100.00
Africa + Europe + West Asia
Among populations	120	10,007,868.13	1649.68	15.53
Among individuals within pops	2608	23,994,627.44	226.37	2.13
Within individuals	2729	23,872,328.00	8747.65	82.34
Total	5457	57,874,823.58	10,623.70	100.00
Africa + Europe + West Asia (continental groups)
Among groups	2	3,461,484.91	952.57	8.69
Among populations within groups	118	6,546,383.22	1034.74	9.44
Among individuals within pops	2608	23,994,627.44	226.37	2.07
Within individuals	2729	23,872,328.00	8747.65	79.80
Total	5457	57,874,823.58	10,961.32	100.00
Africa
Among populations	55	2,617,223.31	921.33	9.48
Among individuals within pops	1127	10,167,098.14	225.40	2.32
Within individuals	1183	10,138,998.00	8570.58	88.20
Total	2365	22,923,319.45	9717.31	100.00
Europe
Among populations	41	2,471,724.52	1072.99	10.17
Among individuals within pops	953	9,269,653.09	246.39	2.33
Within individuals	995	9,187,871.00	9234.04	87.50
Total	1989	20,929,248.61	10,553.42	100.00
West Asia
Among populations	22	1,455,329.56	1213.15	12.58
Among individuals within pops	528	4,550,804.00	190.75	1.98
Within individuals	551	4,538,829.00	8237.44	85.44
Total	1101	10,544,962.56	9641.35	100.00

This table summarizes the result of AMOVA analyses performed on: the working dataset; 3-continents dataset; 3-continents dataset including the “between continents” hierarchical level; African dataset; European dataset; West Asian dataset. For further details on the preparation of the continental datasets, (see Additional file 1)

d.f. degrees of freedom