I’ve spoken before about the enormous effect that affordable SNP and whole-genome sequencing will have on genetic genealogy. In that previous article, I mentioned a study using SNP analysis to identify a person’s ancestry based on autosomal DNA (all the nuclear non-sex DNA). Another study, released today in PLoS Genetics, used SNP chips to identify SNP markers that are characteristic of a certain ancestral origins. According to the authors:
“We have developed a novel algorithm to identify a subset of SNP markers that capture major axes of genetic variation in a genotypic dataset without use of any prior information about individual ancestry or membership in a population.”
To accomplish this, the researchers:
“…studied here 274 individuals from 12 populations (20 Mbuti, 20 Mende, 22 Burunge, 42 African Americans, 42 Caucasians, 20 Spanish, 11 Mala, 20 East Asians, 20 South Altaians, 20 Nahua, 20 Quechua, and 19 Puerto Ricans). Three of these populations are admixed (Caucasians, African Americans, and Puerto Ricans). All individuals were typed using the 10K Affymetrix array.” ... Click to read more!