Welcome

Follow along as I post results and interpretations of various DNA tests conducted on my Palestinian Christian family members. For a condensed version, read the Summary page for key findings. For more in-depth review, the other pages & blog posts will offer detailed and specific information. Use the labels to find posts relating to the Pages above or family surnames. Feel free to contact me at holylanddna@gmail.com. 

Thursday, October 6, 2016

DNA.LAND Admixture Tool

This site was brought to my attention a few months ago and I wanted to try their calculator to see how it compares to all the others.  First, what is dna.land?  From the website:

"DNA Land is a place where you can learn more about your genome while enabling scientists to make new genetic discoveries for the benefit of humanity. Our goal is to help members to interpret their data and to enable their contribution to research.  We are geneticists from Columbia University and the New York Genome Center who work independently of these companies (major DNA testing companies). We will compare your DNA with reference data from different populations to see where in the world your ancestors might have lived.

With that in mind you will want to read the FAQ for information about privacy and usage before uploading your raw data.  The process is similar to gedmatch and results are usually available in 24 hours.

Here are some sample results:


This sample above is from my grandfather with some known paternal ancestry from Lebanon, but mostly Palestinian on both sides.

Arab/Egyptian- this includes Egyptian, Palestinian, Bedouin, Israel, Jordanian, Syrian, Saudi, Yemen, and Yemenite Jew.  So, quite broad in that it includes some Levantine and also Mizrahi Jews in this category.  I wish it broke it down further.

Central Indoeuropean: This is mainly Caucasus, Turkey, parts of Russia

South Central Europe: Italy (not including Sicily)

Balkan: Albanian, Bulgaria, Greece

Med. Islander: Cyprus, Sicilian, Malta

Thoughts on this sample's results: it basically says my grandfather is 42% Arab (with some Levantine & Mizrahi thrown in the mix) and 37% Southern European and 21% Caucasus.  I've never seen it quite laid out this way before.  The Balkan is higher on this than any other calculator.  The Caucasus element is lower here, but maybe because Levantine is typically clumped into Caucasus on other tests.  Not sure how accurate this is, but it definitely points to a strong southern Euro- Greek/Italian influence.

Sample 2:

This is my grandmother's sample and she is 100% Palestinian as far back as we know.  She shows up as a second cousin with my grandfather across all tests, and they share quite a bit of DNA.  The differences in their results here are interesting because technically you would think they would be more similar.

Arab/Egyptian- about the same

Ashkenazi/Levantine- this is a category that my grandfather did not even get, which is very surprising.  His Med. Islander showed up on it's own and not under the Ashkenazi/Levantine header.  Surprisingly, she gets even more Med. Islander at 24%, definitely the highest I have ever seen her receive in that category.  Ashkenazi at 7% seems about right for the tests that go back closer to 1000 years.

Central IndoEuro- Caucasus element is about the same as my grandfather's.

Sardinian- new one here, I have seen this pop up on certain gedmatch calculators.

She doesn't have the Southern Euro (mainland Italian) & Balkan that my grandfather has, whereas he is not showing the Ashkenazi.  Maybe this shows the differences between his Lebanese side - which would give him more of that Mediterranean influence.

Sample 3:


This is my father's sample, child of the two samples above.  He got nearly all of his parents' combined Mediterranean Islander with a whopping 37%!  This combined with Ashkenazi displaces Arab/Egyptian for the top component in his DNA.  He shows less Central Indoeuropean, no Balkan or Southern Euro and no Sardinian.  He matches his mother more closely in his results.  Still, seems surprising that 20% Southern Euro genes would get lost from his father (?).

Sample 4:


And here is where things get a bit more skewed.  These are my results and I can say they are not very accurate.  My mother is entirely NW Euro and my father is 100% Palestinian.  Where does the 31% Balkan come from? And the 24% Med. Islander?  If we assume the 24% Med. Islander, 16% Arab/Egyptian, and 3% Central Indoeuropean comes from my father (43%), at least 7% of the Balkan has to come from my paternal side as well.  It's impossible to skip a generation - I can only inherit from my grandfather, what my father also inherited.  If my father did not inherit any Balkan, then I cannot either.  So, it's puzzling and inaccurate.  My mother does not have any known Balkan ancestry and even if she had a trace, this does not account for 31% of my dna.  If I were an adoptee, I would come away from this test thinking I was some kind of Greek/Italian with one NW Euro grandparent.

Dna.land is free to use and I suggest it if you have the time.  You only get one results, not multiple tools to play with like gedmatch.  Overall, I would say it is not nearly as accurate as other tools available, but still interesting to look at.

If you have used this site, I'd be curious to hear what you think of your results!

No comments: