I just received my mother's results at 23andMe last week. It's very reasonable given her known ancestry. MyOrigins is way off on my family members (I have one double cousin who is 10% Jewish Diaspora, though neither her brother nor the rest of us are Jewish. That's just about equal to one great-grandparent?)
So, how did they do it? The key may be that 23andMe states "The results reflect where your ancestors lived 500 years ago" How do they manage to restrict it to the last 500 years? That is precisely the time frame that most genealogists are interested in.
Here are Mom's results:
23andMe:
37.4% British and Irish
15.4 % French and German
2.9% Scandinavian
38.6% Broadly Northern European
1.5 % Italian
1.2% Broadly Southern European
< 0.1 North African
< 0.1 Unassigned
MyOrigins:
72% European Coastal Islands
19% North Mediterranan Basin
9% European Northlands
Ancestry.com's DNA test shows her as:
36% Great Britain (range 7% to 65%)
33% Europe West (range 6% to 60%)
17% Ireland (range 2% t0 33%)
6% Scandinavia (range 0% to 19%)
4% Italy/Greece (range 0% to 10%)
3% European Jewish (range 0% to 6%)
<1% Europe East (range 0% to 4%)
If I were to guess based on known ancestors:
25% UK (with a little Dutch from New Amsterdam ancestors) - one grandparent was basically Colonial American mix
75% French and German (with a little Swiss)
So, how did they do it? The key may be that 23andMe states "The results reflect where your ancestors lived 500 years ago" How do they manage to restrict it to the last 500 years? That is precisely the time frame that most genealogists are interested in.
Here are Mom's results:
23andMe:
37.4% British and Irish
15.4 % French and German
2.9% Scandinavian
38.6% Broadly Northern European
1.5 % Italian
1.2% Broadly Southern European
< 0.1 North African
< 0.1 Unassigned
MyOrigins:
72% European Coastal Islands
19% North Mediterranan Basin
9% European Northlands
Ancestry.com's DNA test shows her as:
36% Great Britain (range 7% to 65%)
33% Europe West (range 6% to 60%)
17% Ireland (range 2% t0 33%)
6% Scandinavia (range 0% to 19%)
4% Italy/Greece (range 0% to 10%)
3% European Jewish (range 0% to 6%)
<1% Europe East (range 0% to 4%)
If I were to guess based on known ancestors:
25% UK (with a little Dutch from New Amsterdam ancestors) - one grandparent was basically Colonial American mix
75% French and German (with a little Swiss)
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