I had my DNA testing through 23 and Me and they were able to pinpoint what part of Africa my black heritage originated from. Not sure if they can do that with Native Americans. BTW, I'm only 1% black.
23 an Me has ongoing research going on continually in figuring out human genetics/dna. And they can tell me many of the diseases that I am prone to get or not get (I opted to know, you don't have to).
Like I said, they continue to research with their members. They are always emailing me to take tests to measure this or that which I always do for them. I also get emails telling with new results all the time. We have a great partnership.