Sometimes a grain of salt can turn out to be a granule of sugar. When a lot of you receive your AncestryDNA Ethnicity Estimate results, you instantly take the percentages you see displayed at face value.
Too often this leads to disappointment especially if the percentages of certain a genetic ethnicity or biogeographical region is lower than expected, absent or inconsistent with your test results from other sources. There are even situations where one parent is the sole contributor of a certain ethnicity, but somehow the child's results show a higher amount than the contributing parent!
What if I told you that you were looking at your AncestryDNA Ethnicity Estimate all wrong?
I was actually surprised by the number of AncestryDNA testers who never realized the Ethnicity Estimate percentages they see displayed are NOT set in stone, including some regions for which they received 0% (zero percent). How is this possible?
What you're really "looking at" is an AVERAGE SCORE that was calculated from a broader RANGE SCORE, the latter of which may reveal the presence of ethnicity admixture you thought was missing. In this blog I'm going to discuss AncestryDNA's Ethnicity Estimate:
(1) Average Score;
(2) Range Score;
(3) How the Range Score is Calculated, and for you ethnicity admixture geeks,
(4) Brief Comparison Between My Two AncestryDNA Kits.
For this lesson I will present my two AncestryDNA Ethnicity Estimate results: Kit 1 (2012) and Kit 2 (2014). I will focus on West African (Nigerian), Native American and European Jewish (Ashkenazi) admixture, all of which was previously detected in my genomic data by other DNA companies, third-party utilities, and independent Biogeographical Analyses.