The genetic genealogy community has a crush. A big one. Everyone is talking about it. “It has such great features,” says one. “It has a chromosome browser!” exclaims another. “It’s FREE!” they all shout. What’s all the hype about? GEDmatch.
GEDmatch is a mostly free online tool where anyone with autosomal DNA test results from 23andMe, FTDNA, and AncestryDNA can meet and share information. All you need to do is download your data from your testing company and upload it into your newly created GEDmatch account.
GEDmatch is set up just like your testing company and provides two kinds of reports: ethnicity results and a match list. Remember, ethnicity results, meaning those pie charts that report you are 15% Italian and 32% Irish, are based on two factors: a reference population and fancy math. GEDmatch has gathered data from multiple academic sources to provide you with several different iterations of ethnicity reports. This is like getting a second (and third and fourth, etc) opinion on a science that is still emerging. It is a fun exercise, but will likely not impact your genealogy research very much.
The more important match list does allow you to see genetic cousins who have tested at other companies. Of course, only those who have downloaded their results and entered them into GEDmatch will show up on your list. This means GEDmatch has the potential to expand your pool of genetic cousins, increasing your chances of finding someone to help you track down that missing ancestor.
Many also flock to GEDmatch because they were tested at AncestryDNA and so do not have access to a chromosome browser. A chromosome browser allows you to visualize the physical locations that you share with someone else (see below). Some find this a helpful tool when analyzing their DNA matches, though in my opinion, it is not essential.
GEDmatch also has some great genealogy features that let you analyze your pedigree against someone else’s, as well as the ability to search all the pedigree charts in their system so you can look specifically for a descendant of a particular relative. However, even with all of these great features, GEDmatch is still yet another website you have to navigate. With that, there will be a learning curve and certainly some frustration.
GEDMatch or Not?
So, is it worth it? If you are fairly comfortable with the website where you were tested, and you are feeling both curious and patient, I say go for it!
It’s too much to tell you right this minute how to download your data from your testing site and upload it to GEDmatch, but you’re in luck! I’ve put step-by-step instructions for getting started in a free tutorial on my website at www.yourDNAguide.com/transferring.
After you’ve done the upload, you may need a little bit more help to navigate the GEDmatch site because there are so many great tools on it. I recently published a GEDmatch Quick Guide, where I have condensed into four pages the most essential features of GEDmatch to get you started and help you make use of this tool for genetic genealogy. Using my guide is an inexpensive and easy way to get a lot more out of a free online resource. I will also be adding more GEDmatch tutorials to my online tutorial series later this fall. Genealogy Gems fans get a nice discount on these! (Click here for that discount).
By the way, have you tried GEDmatch? I would love to hear about your experiences. You can email me at guide@yourDNAguide.com.
DNA QUICK GUIDE BUNDLES
Advanced DNA Quick Guide Bundle by Diahan Southard which includes:
- GEDmatch: A Next Step for your Autosomal DNA Test
- Organizing Your DNA Matches: A Companion Guide
- Next Steps: Working with Your Autosomal DNA Matches
SUPER DNA Quick Guide Bundle by Diahan Southard with ALL 10 Guides
- Getting Started: Genetics for the Genealogist
- Autosomal DNA for the Genealogist
- Mitochondrial DNA for the Genealogist
- Y Chromosome DNA for the Genealogist
and Testing Companies:
- Understanding Ancestry: A Companion Guide to Autosomal DNA for the Genealogist
- Understanding Family Tree DNA: A Companion Guide to Autosomal DNA for the Genealogist
- Understanding 23 and Me: A Companion Guide to Autosomal DNA for the Genealogist
and Advanced Tools
- Next Steps: Working With Your Autosomal DNA Matches
- Organzing Your DNA Matches
- GEDmatch: A Next Step for Your Autosomal DNA Test