Table 1.

Comparison of the genetic distances computed between the northern cluster, the southern cluster and the African cluster for each dataset (MS, MS+, and SNP)

Dataset	Mean genetic distance between clusters			P value
MS	Northern Africa		Northern–Southern
	0.574	vs.	0.669	0.005
	Southern Africa		Northern–Southern
	0.629	vs.	0.669	0.038
MS+	Northern Africa		Northern–Southern
	0.615	vs.	0.681	0.005
	Southern Africa		Northern–Southern
	0.649	vs.	0.681	0.044
SNP	Northern Africa		Northern–Southern
	0.142	vs.	0.215	0.036
	Southern Africa		Northern–Southern
	0.134	vs.	0.215	0.036

For all datasets: The northern cluster includes the two populations from Colombia. The African cluster comprises the populations from Africa. For the MS and SNP datasets, the southern cluster includes the populations from French Guiana. For the MS+ dataset, the southern cluster comprises the populations from Brazil, Bolivia, and French Guiana. For all tests: Peru (Per) and Venezuela (Ven) were excluded because of clear genetic admixture. The genetic distances for the MS and MS+ datasets were Cavalli-Sforza and Edward's chord distances. For the SNP dataset, the genetic distances were shared allelic distances. For each pairwise comparison between pairs of clusters a P value was computed from a Wilcoxon test.