Love that it's your Dad on the left--sitting at the same table, so to speak, just as you and I do :)
The genetic testing is a spit test to determine your genetic make-up.  Controversial because many don't want the genetic information known--some say you may be cloned or match some rich person's who needs your organ?  I don't know, I'm nearing fifty and think there are probably many others smarter, stronger THEY'd want to clone ;) 
There are different companies and I did mine through ancestry.com which I believe was started by some L.D.S. people?  Many on the site have linked their family trees and many of these are part of the L.D.S genealogical archives. 
Most interesting because the test will link you to other close and not so close relations.  My parents have both taken the test and it links me to them as parents, also a few of my nine siblings and the same is true for them, and my son and I show up as his mother.  But, even if we're from the same parents our genetics are matched as relatives, but none of us the same.  Think about a litter of puppies and how each one has different markings.  Out of all of my family who has taken the test, I show up as having the most Scottish/Irish/Welsh at 33%!  Second was Western European (German) at 29% and then Scandinavian.  The surprising results for all of us have been the less than 1% because these have been different for all of us.  That's the one that included Asia Central: Afghanistan, Azerbaijan, Kazakhstan, Kyrgyzstan, Tajikistan, Turkmenistan, Uzbekistan.  Nobody else in my family had this one! Your history here made me think with my German heritage, it would be likely I also this Kazakhstan connection you write about?
Or, could be much early when those from Afghanistan migrated north into the Scottish area? 
All very fascinating and a way in which to demonstrate how we're all connected.  It does help to hear political histories in order to re-frame the limit beliefs we have about others and the wars and trauma's they've endured as well as the resulting psychologies. 
Yes, perhaps some time I will sit down and write more about my family in this historical way.
Having grown up Mormon comes up much in my freewrites, sometimes in ways other's might deem negative or derogatory, but I love my ancestors and their strength, courage and faith and so many aspects of the church will always be with me and I am indeed grateful though I have left the fold.