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'mystifying' results when they put 5 DNA ancestry kits

 
 
Reply Fri 1 Mar, 2019 07:19 am
Twins get some 'mystifying' results when they put 5 DNA ancestry kits to the test

https://www.cbc.ca/news/technology/dna-ancestry-kits-twins-marketplace-1.4980976?fbclid=IwAR3EDX3TYUgnKy95z7gJ0M_bcA4NVXpr4m4_CxlWJTmhiXtENLWT50bC2GA

Geneticist at a popular ancestry company admits it's 'kind of a science and an art'
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Type: Discussion • Score: 4 • Views: 523 • Replies: 8
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Sturgis
 
  1  
Reply Fri 1 Mar, 2019 05:53 pm
@edgarblythe,
Very telling was the part about a sample being some 3 billion parts, however only some 700,000 are looked at.


As stated, a science and an art. Add in on that, this is still a rather new thing. In my opinion it is interesting to have these tastings done (not that I personally have), just not turn to it as a complete 100% perfect showing. As the road lengthens, the accuracy should improve.
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edgarblythe
 
  1  
Reply Fri 1 Mar, 2019 08:11 pm
I and some I know have done it. I doubt that the results where we are concerned is that far off, as it seems reasonably consistent.
Sturgis
 
  1  
Reply Fri 1 Mar, 2019 11:53 pm
@edgarblythe,
Even with the case of the twins in the item you gave, there is a fairly consistent connection with the two. It just looked a little odd being that they're identical.

Made for an interesting read too.
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InfraBlue
 
  1  
Reply Sat 2 Mar, 2019 04:00 pm
Oh yeah.

I'm pretty heavily admixtured and the percentages of haplogroup origins vary considerably among the three testing services that I've sent my data to. MyHeritage and GEDmatch will analyse test results from 23andMe for free. GEDmatch is more academic and has 7 different analyzation projects that vary amongst themselves. Most of my genealogy is Native American (Amerindian, etc.) but where 23andMe and GEDmatch have me at about 50%, MyHeritage has me at 79.4% referred to as "Central American." 23andMe includes "East Asian" with "Native American." GEDmatch has a more precise breakdown of these Native American haplogroups, e.g. "Mesoamerican," "Arctic-Amerind," "South-American Amerind," and "North Amerind" in their "MDLP World-22 Populations" project. 23andMe and GEDmatch (MDLP World-22) have me at approximately 6% "Sub-Saharan African." GEDmatch's MDLP K11 "Modern Admixture Proportions" project has me at 5.21% "African." MyHeritage doesn't acknowledge any Sub-Saharan African at all. The rest of my genealogy is mostly Iberian/Southern European. GEDmatch MDLP K11 has categories like "Neolithic," "Eastern Hunter-Gatherer," "Western Hunter-Gatherer," and "Basal" which, from what I've gathered, may stand for "Basal Eurasian."
edgarblythe
 
  1  
Reply Sat 2 Mar, 2019 04:04 pm
@InfraBlue,
Interesting stuff. You make me interested in doing more of the tests.
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rosborne979
 
  2  
Reply Sat 2 Mar, 2019 04:44 pm
@edgarblythe,
I hope they do a better job with professional scientific studies.
edgarblythe
 
  1  
Reply Sat 2 Mar, 2019 05:05 pm
@rosborne979,
They are just in it for the money, apparently.
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InfraBlue
 
  1  
Reply Sat 2 Mar, 2019 05:19 pm
I see it as pop genealogy with these companies. I'm sure the academic studies are much more vigorous.
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