Discovering DNA Communities – Ethnic Origins

A new study uses genetic data and genealogical research from more than 700,000 Ancestry.com <ancestry.com> customers to reveal migration trends in North America over the past 300 years. Findings, which were published in the journal Nature Communications <www.nature.com/article/ncomms14238>, are the basis of AncestryDNA’s Genetic Communities user experience.
According to an Ancestry,com announcement, the study shows “how specific groups of people are connected through their DNA, what places they called home, and which migration paths they followed to get there.” The results correspond strongly with documented history and the results of genetic data done by 23andMe, GPS DNA and Family Tree DNA.
Researchers first identified genetically related groups and smaller clusters within them. Then they used family trees associated with those similar DNA profiles to describe the geographic origins and migration patterns within each cluster. Of specific interest were communities that have develop distinguishable genetic patterns due to “gene flow barriers” such as isolated geographic locations or cultural identity that encourages mating within the community.
Unfortunately, there has not been a methodology research model to reasonably determine African-American and Native-American clusters based on the above mention. The DNA Communities does afford African-American and Native-Americans the opportunity to identify additional relationships based on the DNA Community findings.
If you are a member of FamilyDNA, GPS DNA or 23andMe you will find similar clusters and ethnic communities base on similar methods. The National Geographic Project (Geno 2) was the first and is still actively working to define their results. The only draw back for most is the cost which is over $200 to participate.

 

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