Shared Autosomal DNA Table
What is Admixture?
Admixture is the scientific term for genetic ethnicity percentage estimates. Based on the user-submitted information, archaeological samples and thorough data analysis, admixture projects attempt to approximate the origin of your ancestral lines and estimate what percentage of that DNA has been passed down to the individual tester. While admixture project algorithms are based on scientific data, they are only accurate as compared to the available DNA testers who have reported their genetic ethnicity, and the archaeological samples contributed to the project. These tools are incredibly helpful for your genetic genealogy research if you know what you're looking at and what to look for.
Mirror Tree is an exact copy of a DNA match’s tree. For more information on Mirror Tree, please visit our webpage which goes more in-depth and shares different tools. Click here to visit the Mirror Tree page.
DNA Leeds Method
The Leeds Method is a simple and colorful way to organize your DNA matches using color coded clusters. The goal of the Leeds method is to help you quickly identify groups of people in your match list who are likely to share a common ancestor with each other. Grouping your matches often makes it easier to identify a common ancestor. For more information on how to use the Leeds Method, please click here.
GEDmatch provides DNA and genealogical analysis tools for amateur and professional researchers and genealogists. Most tools are free, but they do provide some premium tools for users who wish to help support us with contributions. You will need to upload DNA and/or genealogical (GEDCOM) data to make use of the tools there. Registration requires your name, email and a password of your choice. Click HERE to register.
Do-It-Yourself with GEDmatch for More Accurate and Specific Results
Anyone who tests with any major company can upload their raw data to GEDmatch for more advanced tools. (For instructions on how to download your raw data for upload to GEDmatch, see the help section for the company you tested with.) Since GEDmatch is a crowdsourcing-style project, multiple independent scientists and researchers are able to have their DNA project included on the website and make it available for the general public to use and contribute to. These researchers often have cutting-edge ideas and focus their work on a variety of specific populations. For example, the Ethiohelix project has a special focus on regional populations throughout Africa. If you were surprised to not see Native American results in your ethnicity pie from your private testing site, use one of the Eurogene's projects to see if "Amerindian" shows up in your admixture. These projects are constantly being updated and fine-tuned as the researchers locate genetic samples and segments that they can trace to specific regions. This means that every time you run an ethnicity estimate, it is only as accurate as the most recent project update. If you returned in a year to run the same projection, it may well have changed even though you are using the same DNA kit you used a year ago! As worldwide DNA research becomes more specific, your personal ethnicity estimate will also become more accurate.
To put these tools to work for you, find the admixture tools on GEDmatch after you have uploaded your raw data from your testing site.
Pick the project you want to use. MDLP Project is a broad, world-based project that covers large global areas and is a good place to start if you have no idea where you're from. Eurogenes focuses primarily on Europe and the new world. Dodecad covers Asian and African ancestry. HarappaWorld is specific to South Asian populations. Ethiohelix covers African PuntDNAL and GeodrosiaDNA's sample populations are mostly comprised of archaic DNA samples found at archaeological sites. Ancestry, and is great for people of mixed ethnicity with any amount of African descent.
After you've picked your project, input your GEDmatch kit number (you can find this on the home page of GEDmatch after you log in) and choose the calculator model if the option is there. Some projects have sub-projects. For example, the numbers at the end of the Eurogenes calculators indicate how many populations the project is broken down into. K13 will give you a more general admixture result, and K36 will break your admixture down into far more specific regions. For more information about what each calculator does, refer to the website of the project.
Wait about 30 seconds to 2 minutes, and you'll see a screen that looks like this. This example is using Eurogenes K13. Notice the large slice of North Atlantic and this is the same kit run with Eurogenes K36. It looks completely different because the larger regions from 13 are broken down into smaller, more specific regions.
For more help please visit our amazing Angel's blog referencing how to Find Your Own Ethnic Roots with resources like GEDmatch here.