This article reports on an examination of admixture and principal component analyses on the 81 worldwide populations and some regional subsets of these reference populations in the Kidd and Seldin panels to determine how well the combined panel illuminates population relationships.
The benefits of ancestry informative SNP (AISNP) panels can best accrue and be properly evaluated only as sufficient reference population data become readily accessible. Ideally the set of reference populations should approximate the genetic diversity of human populations worldwide. The Kidd and Seldin AISNP sets are two panels that have separately accumulated thus far the largest and most diverse collections of data on human reference populations from the major continental regions. A recent tally in the ALFRED allele frequency database finds 164 reference populations available for all the 55 Kidd AISNPs and 132 reference populations for all the 128 Seldin AISNPs. Although much more of the genetic diversity in human populations around the world still needs to be documented, 81 populations have genotype data available for all 170 AISNPs in the union of the Kidd and Seldin panels. Analyses of this dataset that focused on Native American populations revealed strong cluster patterns associated with many of the individual populations studied. (publisher abstract modified)
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