Ok, so I’m known for having picked apart quite a few online DNA analysis tools and services. This is especially true when it comes to my African-related results. So it seems only fair that I share some kudos.
I don’t know what’s been happening over at the Columbia University DNA analysis project, DNA.land…but it looks like the team behind this project have been very busy bees indeed. I, for one, am very, very pleased with the increased accuracy this free service now provides. By and large, it is beginning to reflect the results I received via the paid testing service, Genebase. It’s also substantially more accurate than the results provided by AncestryDNA as far as my African genetic ancestry is concerned.
In its first incarnation, my African genetics were the standard West African and Bantu-speaking. I’m proud of my 8% West African and Bantu speaking genetic heritage (via Genebase). There is a huge difference between being 8% of something and 60% of something.
Now my DNA.land results look like:
The West African results can be more accurate. I know that some of what is being classed as West African here is actually Tuareg and Berber. I’m pretty confident that if DNA.land continues to tweak its datasets, that these parts of my African genome will begin to emerge. At the moment, my guess is that my Berber results are hidden under the Lower Niger Valley category. I suspect that some of my Tuareg results are lost under this heading as well.
However, keeping things positive, ‘East Africa’ finally makes an overdue appearance.
As for that 1.2% ‘Ambiguous’? That’s where some of my Sephardic Jewish and Middle Eastern results are.
And for my family, let’s not get too excited about the Native American heading. Native American results on any of the DNA analysis services I’ve used remain at 0%. The 1.3% shown here actually represents Amer-Indian genetic matches from Central and South America. In other words, this has more to do with the pre-historic Eastern nomadic migration into the Americas thousands of years ago.Sorry guys! No Cherokee or Powhatan to be found. This may be due to genetic wash outs…or all those tales amount to myth (Finding Your American Indian tribe Using DNA: https://dna-explained.com/2015/03/31/finding-your-american-indian-tribe-using-dna)
There are a few things to remember when using DNA analysis services and free analytical tools:
- Your results will depend on the amount of DNA that the service or tool you’re using has sequenced. Don’t think that your entire YDNA, mtDNA or autosomal DNA has been sequenced…unless the service you use guarantees this. If you’re paying anything less than thousands of dollars, trust me, only a portion of your genome has been sequenced.
- Few DNA testing services are transparent about how much of your genome has been sequenced and analyzed. The more that’s sequenced the better the analysis. It’s a pretty simple equation.
- Free DNA analysis tools tend to use free DNA datasets produced by 3rd paties. The quality and accuracy of the data sets used are beyond their control. These data sets are produced by 3rd parties who are not answerable to the services who use them. If this particular topic interests you, you should surf on over to Berkeley’s Drosophilia Genome Project via http://www.fruitfly.org/sequence/human-datasets.html )
- DNA anlysis is an evolving science. As more global populations undergo DNA studies (and their results are added to data sets), and as science continues to finesse its understanding of the development and evolution of admixtures, dataset accuracy will continue to improve.
- Take early results as an indication of the global cultures you might be connected to. These results will not be definitive. See Point #4.
Keep up the great work, DNA.land!
21 Sep 2016 note: Regular readers will be familiar with my Congo and Central African DNA results, which I should have mentioned here. These too are lumped in under “West Africa” (Why I struggle with ‘West Africa’ as a genetic classification, https://genealogyadventures.wordpress.com/2016/03/04/why-i-struggle-with-west-africa-as-a-genetic-classification/). I sometimes forget that it takes time for new readers to read previous dna-related posts on the site