Resources for Insights on DNA Ancestral Percentages

Posted    Last Modified: June 15, 2018 at 1:27 pm
· Labs and Testing Technology, References

Many DNA testing laboratories are advertising ethnicity or ancestral population percentages for participants – but how are those figures calculated? Why are there such differences in the results from one company to another? This presentation provides insights on how these percentages are derived.

Ancestral Percentages here meaning Biogeographical Ancestry (BGA) defined as an estimation of one’s biological, ethnic and/or geopgrahical origins based on DNA analysis.

  • Also know as Ethnicity Estimates, Admixture Analysis, etc.
  • Being mass marketed on television and other media as
    Holy Cow, I found out I was 35% Martian and 25% Imaginerian?
  • Currently the most common basis that Ancestral Percentages are being calculated is with Microarray DNA sequencers that test about 600,000 to 1 million known SNP (single nucleotide polymorphism) markers very quickly and inexpensively.

Here is a list of references, resources, and additional information relating to the presentation for Insights on DNA Ancestral Percentages:

Web Resources