A for Autosomal: All people (men, women, and children) can take this test.
Autosomal DNA tests can be used to search for relative connections along any branch of your family tree. Unless the connection is so far back that the shared DNA has essentially been eliminated through too many generations of recombination, any autosomal match between two individuals indicates a possible genetic connection. There is nothing in this test that will tell you which branch of your family the match is on, however. Therefore, having your parents, grandparents, cousins, and other family members tested will help you to narrow down potential matches.
Accuracy (click on highlighted link for more discussion). The average amount of autosomal DNA shared with a relative decreases with each successive generation. Percentages are also approximate - for example, a sibling may share anywhere from 47–52% of their DNA in common.
Women and Men: M is for Matrilineal. Men can get Mitochdondrial DNA haplogroups Men Only: Y is yes, only men can get Patrilineal Y-chromosome DNA haplogroups
Here's the skinny. Males can be tested for all three: Autosomal, Mitochdondrial, and Y-chromosome. Women can be tested for two: Autosomal and Mitochdondrial
Your Regional Ancestry Explained We determine your recent ancestry by analyzing small bits of DNA scattered across your entire genome. This portion of your ancestry comes equally from both parents, all four grandparents, all eight great-grandparents, and so forth. Unlike mtDNA and Y-DNA (see Your Deep Ancestry Explained), this portion of your DNA gets scrambled every successive generation, so what we can learn from it is not so much your deep history, but instead events in historic time, and even events more closely linked to your known ancestors.
You Did the Test, Now What? Click the button "Interpreting Test Results" for a 50-page book I Have the Results of My Genetic Genealogy Test, Now What?
How Much DNA Do Cousins Share? Many DNA-testing companies have services that allow you to be matched with other people in their databases who share your ancestry, such as third and fourth cousins. But how much ancestry does one really share with a third or fourth cousin, and if you go further (fifth cousins, sixth cousins), do you end up sharing no DNA? Also, how many third and fourth cousins does the average person have?
Join GedMatch for Free. Step-by-step Instructions to Upload Your Raw Data to GedMatch.
GEDmatch provides DNA and genealogical analysis tools for amateur and professional researchers and genealogists. Most tools are free, but we 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 here.