Admixture or autosomal tests for percentages?

[Johnserrat]

Tribes, CSFS, ENFSI and Omnipop all employ profile-matching algorithms that compare one's entire allelic profile to the profiles of diverse populations. So, it may be less a matter of 'asian looking' genes than an Asian-looking profile - a particular combination of specific alleles that has greater frequency among an Asian population.

This is very true and often forgotten. I hope to test my parents at some point and my kids to see what the result will be. I just need to win a small lottery pot...

John

[tomcat]

Yes, but this also means that the test would in certain cases would fail a blind test (some individuals would wrongly be considered asian). The "weird" thing is also that both of your parents and your offspring (if all of native European stock) would likely all fall into the European category while you did not. This is because the markers in question always "shuffle" trough each generations and maybe in 2 of 100 cases the individual get "asian looking" genes even the individual has no closer relationship with asians than other europeans. This is a property of these autosomal STR I do not like.

Noaide

Tribes, CSFS, ENFSI and Omnipop all employ profile-matching algorithms that compare one's entire allelic profile to the profiles of diverse populations. So, it may be less a matter of 'asian looking' genes than an Asian-looking profile - a particular combination of specific alleles that has greater frequency among an Asian population.

[Noaide]

You should know that about 2% of Europeans show strong matches to Asia. Personally my results came back strongly as Nepalese, despite the fact that virtually all of my ancestors for the past 500 years lived within 100 miles of each other in north-western europe. DNATribes explained that my results likely reflect ancient connections between Asia and Europe. It is probably the same for you.

Yes, but this also means that the test would in certain cases would fail a blind test (some individuals would wrongly be considered asian). The "weird" thing is also that both of your parents and your offspring (if all of native European stock) would likely all fall into the European category while you did not. This is because the markers in question always "shuffle" trough each generations and maybe in 2 of 100 cases the individual get "asian looking" genes even the individual has no closer relationship with asians than other europeans. This is a property of these autosomal STR I do not like.

Noaide

[Downer101]

How about the idea that genetic inheritance can skip generations? Then again my father and his sister both have epicanthal eye folds (asiatic features) and I got 100% European doesn't make sense. At the same time I was classified anthropologically with a slight Finnic (West-Sibirid) admixture..

[Johnserrat]

You should know that about 2% of Europeans show strong matches to Asia. Personally my results came back strongly as Nepalese, despite the fact that virtually all of my ancestors for the past 500 years lived within 100 miles of each other in north-western europe. DNATribes explained that my results likely reflect ancient connections between Asia and Europe. It is probably the same for you.

John

[Jambalaia32]

I have also found that to be an excellent way to try to make sense of DNA Tribe scores.

For example, the following set of Italian scores would seem to indicate that the individual (me) is not really very Italian at all, and is more likely to share a pre-Germanic ancestry with the Lombards:

6 Italy (0.7) 13.13
21 Emilia-Romagna, Italy (0.47) 6.91
24 Lombardia, Italy (0.45) 6.57
48 Veneto, Italy (0.35) 4.25
53 Italy (0.38) 4.00
57 Lazio, Italy (0.41) 3.81
67 Piemonte, Italy (0.33) 3.33
74 Liguria, Italy (0.44) 3.12
91 Sicily, Italy (0.37) 2.69
103 Marche, Italy (0.28) 2.45
130 Piedmont, Italy (0.27) 1.74
136 Toscana, Italy (0.16) 1.54
153 Toscana, Italy (0.13) 1.36
162 Calabria, Italy (0.14) 1.16
170 Campania, Italy (0.13) 1.05
195 Puglia, Italy (0.24) 0.82
196 Umbria, Italy (0.21) 0.78
199 Sicilia, Italy (0.08) 0.75
228 Catanzaro, Italy (0.15) 0.45
290 Allia, Sicilia, Italy (0.22) 0.13
374 Genoa, Italy (0.03) 0.03
444 Milan, Italy (0.03) 0.01
462 Rome, Italy (0.03) 0.00
508 Naples, Italy (0.21) 0.00
566 Venice, Italy (0) 0.00


Jim
no known Italian ancestry

I had no Italian on my Autosomal from FamilyTreeDna and OmniPop150.5 ,but many India. But everybody says I'm Italian,wait til they find out!! I heard Italy is made up of many different people,I wonder if your Italian is really "Italian" ?

[Jambalaia32]

Blood Types inherited from Mother????

Meant to say that it was an admixture test, giving percentages!
Maria

Are blood types inherited from the mother? Seems so. Yours is and mine too. Or maybe it's just chance.

[tomcat]

...cluster matches by geographic region, align diverse matches by score, and segregate diaspora/admixed populations.

My aim was to see if a rearrangement would produce any insight. I chose a simple cross axis scheme where matches of similar geography are ranked in a column by score and aligned horizontally by score with matches of other geography in other columns. There may be other arrangements that could be more useful.

[Jim Honeychuck]

I was able to copy-and-paste from my Extended report into a word processing page and then, through much cut-and-pasting, cluster matches by geographic region, align diverse matches by score, and segregate diaspora/admixed populations.

I have also found that to be an excellent way to try to make sense of DNA Tribe scores.

For example, the following set of Italian scores would seem to indicate that the individual (me) is not really very Italian at all, and is more likely to share a pre-Germanic ancestry with the Lombards:

6 Italy (0.7) 13.13
21 Emilia-Romagna, Italy (0.47) 6.91
24 Lombardia, Italy (0.45) 6.57
48 Veneto, Italy (0.35) 4.25
53 Italy (0.38) 4.00
57 Lazio, Italy (0.41) 3.81
67 Piemonte, Italy (0.33) 3.33
74 Liguria, Italy (0.44) 3.12
91 Sicily, Italy (0.37) 2.69
103 Marche, Italy (0.28) 2.45
130 Piedmont, Italy (0.27) 1.74
136 Toscana, Italy (0.16) 1.54
153 Toscana, Italy (0.13) 1.36
162 Calabria, Italy (0.14) 1.16
170 Campania, Italy (0.13) 1.05
195 Puglia, Italy (0.24) 0.82
196 Umbria, Italy (0.21) 0.78
199 Sicilia, Italy (0.08) 0.75
228 Catanzaro, Italy (0.15) 0.45
290 Allia, Sicilia, Italy (0.22) 0.13
374 Genoa, Italy (0.03) 0.03
444 Milan, Italy (0.03) 0.01
462 Rome, Italy (0.03) 0.00
508 Naples, Italy (0.21) 0.00
566 Venice, Italy (0) 0.00


Jim
no known Italian ancestry

[tomcat]

... I wish the extended report was organized in separate parts, so I can just read the part that is an extension of "Part B" of the original. I wish the diaspora groups and the native groups weren't all lumped together like this....

I was able to copy-and-paste from my Extended report into a word processing page and then, through much cut-and-pasting, cluster matches by geographic region, align diverse matches by score, and segregate diaspora/admixed populations.

[rainbow]

Here is a quote from an email response I received from dnatribes.:

Thank you for contacting us regarding your results. I have reviewed all files and verified that the reports delivered to you by email include analysis for your own DNA sample labeled with your name and unique tracking number.

DNA Tribes analysis differs substantially from freely available programs such as OmniPop, and we cannot warrant or interpret OmniPop results. Our own algorithms were developed for DNA Tribes by Eduardas Valaitis (Ph.D. in Statistics, Yale University). We are not familiar with the algorithms which delivered your percentages below, but they are not consistent with results identified with the DNA Tribes algorithms.

DNA Tribes results identify a primarily Northwest European affiliation for your DNA profile, consistent with your known ancestry primarily from the British Isles.

[Paulie]

It's a dead end if you're expecting to be able to show any native ancestry for you from those countries. As your signature suggests. And you probably won't be able to show the european side either, as I mentioned earlier; What populations your makers match to does not indicate populations you belong to.

[rainbow]

If the countries are former European colonies, at least for autosomal tests using CODIS markers, it's probably a dead end.

A dead end? The odd matches in my dnatribes report were European colonies. Mozambique was a Portuguese colony. Java was a Dutch colony.

[Paulie]

I thought of starting a thread asking who else got these African matches. Do you think I should?

If the countries are former European colonies, at least for autosomal tests using CODIS markers, it's probably a dead end.

Going back more than a couple generations is best left to y-dna and mt-dna. The "great middle" can only be found by testing known relatives.

[rainbow]

Oh, I forgot to mention. I also have a high match in Guinea-Bissau, another African Portuguese speaking country.

My original dnatribes report has Maputo, Mozambique and Mozambique.

My extended report from dnatribes also has Guinea-Bissau, and a bunch of other African matches. I wish the extended report was organized in separate parts, so I can just read the part that is an extension of "Part B" of the original. I wish the diaspora groups and the native groups weren't all lumped together like this. I emailed dnatribes about my "Amazon Region" asking if I really matched the Amazonian Indians, or if I was matched to that category because of my Spain & Portugal matches. The response seemed to be it was because of the latter. This was after I already went around telling people I matched Amazonian and a bunch of other things.

I thought of starting a thread asking who else got these African matches. Do you think I should?