I still remember when L. L. Cavalli-Sforza's The History and Geography of Human Genes was a candle in the dark, illuminating human history with slivers of genetic data laboriously gathered and analyzed over decades. We've come a long way. Dienekes points me to a new paper, Fine-scaled human genetic structure revealed by SNP microarrays:
We report an analysis of more than 240,000 loci genotyped using the Affymetrix SNP microarray in 554 individuals from 27 worldwide populations in Africa, Asia, and Europe. To provide a more extensive and complete sampling of human genetic variation, we have included caste and tribal samples from two states in South India, Daghestanis from eastern Europe, and the Iban from Malaysia. Consistent with observations made by Charles Darwin, our results highlight shared variation among human populations and demonstrate that much genetic variation is geographically continuous. At the same time, principal components analyses reveal discernible genetic differentiation ...
