Ancient African Head in South America
This is a conversation about DNA testing that shows different results by different DNA Companies. The customer is complaining about their Native American DNA percentage from various companies. Depending on what DNA is picked up in testing, DNA can give you different results. Here is why I say that DNA testing is not 100% reliable.
Ancient People Moving Around The World
9th May 2016, 08:39 PM
|
|||
|
|||
Native American % way off??
I'm so confused. I
tested with ancestry and then uploaded my raw data to FamilyTreeDNA and my
results are completely different, especially my native american %.
Ancestry Testing Company: Africa: 7% Native American: 45% Europe: 38% - Iberian Penisula 18% - Great Britain 14% - Irish 4% - European Jewish %1 - Italy/Greece <1% West Asia 9% - Caucus 5% - Middle East 4% Family Tree DNACompany European %49 - Southern Europe %35 - Scandinavian %8 - British Isles %5 - Finland and North Siberian %1 New World : %28 East Asian: %10 - North East Asia %10 Central/South Asia: %7 - Central Asia African: %5 - West Africa Middle Eastern %1 GEDMatch Company: North_Atlantic 18.25 Baltic 5.34 West_Med 13.64 West_Asian 3.80 East_Med 6.63 Red_Sea 2.04 South_Asian 0.47 East_Asian - Siberian 2.64 Amerindian 40.64 Oceanian - Northeast_African 1.91 Sub-Saharan 4.63 Why the huge % change in Native American and European?? So confused. Any ideas?  |
|||
 9th May 2016, 09:14 PM |
|||
|
|||
I have been
complaining about the misreporting of Native American in myOrigins at FTDNA
for a long time. I see it happen with every single Latin American that has
Native American ancestry. It even happened to the 13,000 year old 100% Clovis
Anzick-1 infant when the DNA was uploaded to FTDNA http://www.fi.id.au/2014/11/clovis-a...-in-ftdna.html Compare
that to his makeup in Gedmatch athttp://www.fi.id.au/2014/10/new-clov...-gedmatch.html
FTDNA myOrigins is the worst calculator when it comes to Native American DNA. Both Ancestry and 23andme do a better job. |
|
9th May 2016, 10:29 PM |
|||
|
|||
Welcome to our message
board, AwesomePossum.
As Armando said, we've seen these things happen many times. What happened in your case is 46% as the total of 28% New World + 10% Northeast Asia + 7% Central Asia + 1% Finland in MyOrigins equals 45% Native American in AncestryDNA This is because the Maya and Pima reference samples that had been included in an older calculator called Population Finder used here until 2014 are currently not included in MyOrigins because some of them were deemed impure (many of them are mixed to a limited extent with peoples from the Iberian peninsula). And in many GEDmatch calculators, the portions assigned to "Siberian" should be mentally added to your "Amerindian", so that 40.64% Amerindian + 2.64% Siberian = 43.28% real Native American for you. I see that AncestryDNA gave you a 1% European Jewish estimate. Out of curiosity, is your Middle Eastern portion categorized as North African, Asia Minor, or Eastern Middle East by MyOrigins? Some Sephardic DNA is classified under those categories, or under Southern European, by MyOrigins. Other Sephardic DNA is classified as "Ashkenazi Diaspora", but only tells the customer that when the person has at least 5% of that kind of DNA. I assume you have valid Jewish matches in GEDmatch.
Last edited by khazaria; 9th May 2016 at 10:36 PM.
|
|||
|
9th May 2016, 10:46 PM |
|||
|
|||
Thank you guys so much for your help in trying
to understand more about how they calculate admixtures.
Here's my results from MyOrigins (added it as an attachment below) They list middle eastern just under "Middle Eastern." The Native American % you explained makes a lot of sense. 43.28% All three also mix the European portions. Ancestry seems to lump a lot into Great Britain. The other two break that up a bit more. My Origins confuses me on the European side too.
Quote:
Attached Images
Last edited by AwesomePossum; 9th May 2016 at 10:48 PM.
|
|
9th May 2016, 10:49 PM |
|||
|
|||
Quote:
Yeah, I am going to test with 23andme to see what they give me. From what I hear they give you more details and more tooks to utilize. |
|||
|
9th May 2016, 11:27 PM |
|||
|
|||
Quote:
"Eastern Middle East" according to
the screenshot. Thanks for that. Some European Jews do show small percentages
of that in MyOrigins.
Quote:
Okay, post your future
23andme results for us in this thread later this year, if that's what you end
up doing. They took away a few of their tools but their ethnicity estimates
are often more accurate than the other sites.
But to be honest, I don't think you really need 23andme because you're already in all the best databases for matching with relatives, and their ethnicity calculations are close enough to reality that you don't really have to doubt your ancestry. It might be better to spend the money on a different autosomal kit for a relative of yours such as if you have a living parent or grandparent or aunt/uncle or a fullblood sibling. |
|
9th May 2016, 11:44 PM |
|||
|
|||
Thanks so much for your help! I guess I'm
curious to see how they estimate my native ancestry and European ancestry. I
know these are estimates and it's hard to distinguished between certain areas
but really do want to learn more. It shocked me to learn about the Great
Britain percentage on ancestry and was wondering how that was determined.
Also on GEDmatxh it shows that my distances are too far than most. When I
check it just says that their might now be enough of my ancestry in the data
base to give me off numbers. When I test the beta against 3 matches I get 50%
Mayan, 25% Mozambite barber, ans 25% West English. I'm just trying to make
sense of it all!
I am planning on testing my both parents soon. Again thank for your help!!!
Quote:
|
|||
|
10th May 2016, 12:26 AM |
|||
|
|||
Quote:
Good, this is what I
was recommending. After that happens, you'll be able to create a phased kit
for yourself inside GEDmatch. That'll help you find which segments and
ethnicities you inherited come from which parent.
As for your British and Irish ethnic affinities, which might be ancient, many Spanish and Portuguese people score multiple percentage points of those in AncestryDNA. This thread shows some examples: http://www.forumbiodiversity.com/sho...nyone-have-any So those affinities usually come to Latin Americans like Mexicans through their Northern Spanish and Basque ancestors. |
|
10th May 2016, 07:16 AM |
|||
|
|||
Quote:
23andme also does a
better job of identifying Iberian vs British Isles and also Iberian vs
Italian than either Ancestry or FTDNA. You really should test yourself and
both of your parents at 23andme because they use the parents to phase which
creates a better estimate of your ethnic breakdown but FTDNA and Ancestry do
not use the parents for phasing. 23andme also provides a breakdown of the
ethnicity by chromosome and even shows the ethnic breakdown from each parent
by chromosome when you test your parents. So 23andme is better both with the
ethnicity calculator and the DNA tools for ethnicity.
|
|||
|
|||
Quote:
your results are quite
similar to my grandma's
|
No comments:
Post a Comment