I have one person's atDNA tested at AncestryDNA so far. M.S. was adopted at birth in New Jersey before 1940, before records were sealed. (Under a new law, the records sealed as of 1940 will become accessible in 2017.)
Although I viewed M.S.'s adoption papers, I can't accurately determine her biological family for reasons that will be explained in an upcoming post. Thus, I cannot attach her family tree to her results at AncestryDNA. One of the great features of AncestryDNA is the (suggested) Most Recent Common Ancestor as identified in the family trees of the DNA matches. (See this blog post for an illustration.) I can't use this feature without a family tree, so my father's test and mine will enable me to participate in this feature.
The other reason for testing at a third company (FamilyTreeDNA and 23andMe already done) is to locate more close relatives and solve (and create) more family mysteries. You can upload results from these three companies for free to GedMatch to meet everyone, but most people don't do this. The link you need to solve your family mystery may be quietly ensconced at one testing site, unaware that he or she is your missing link.
|Testing kit. Spit into vial.|
Return in postage-paid package.