Silke Brauer

TL;DR: Surprisingly, gradients in the frequency distribution of some NRY/mtDNA haplogroups across Polynesia and a gradual west-to-east decrease of overall Nry/mt DNA diversity are identified, providing evidence for a west- to-east direction of Polynesian settlements but also suggesting that Pacific voyaging was regular rather than haphazard.

TL;DR: It is found that the ancestors of Near Oceanians diverged from ancestral Eurasians ∼27 thousand years ago (kya), suggesting separate initial occupations of both territories.

TL;DR: The genetic data suggest a dual origin of Polynesians with a high East Asian but also considerable Melanesian component, reflecting sex-biased admixture in Polynesian history in agreement with the Slow Boat model and demonstrate that conclusions based solely on uniparental markers may not accurately reflect the history of the autosomal gene pool of a population.

TL;DR: The lack of significant geographic heterogeneity among Y-STR and mtDNA haplotypes in U.S ethnic groups means that forensic DNA databases do not need to be constructed for separate geographic regions of the U.s, and means that regional variation in disease susceptibility within ethnic groups is more likely to reflect cultural/environmental factors, rather than any underlying genetic heterogeneity.