Take the results of a scientific experiment concluded in 2012: Re-Examining the "Out of Africa" Theory and the Origin of Europeoids (Caucasoids) in Light of DNA Genealogy.
In fact, the researchers made note of their repeated absence stating “not one non-African participant out of more than 400 individuals in the Project tested positive to any of thirteen ‘African’ sub-clades of haplogroup A”. The only remaining uncertainty relates to the identity of this “more ancient common ancestor”. All that can be stated with confidence is that humanity’s ancestor did not reside in Africa.
Deal with it.
EDIT: I honestly had to remove a part of the post. I didn't have time to read more from that blog I quoted, but it was so embarrassing that I couldn't even bother asking people here to make the effort of dissociating the good from the junk. And I mean, real retard'o junk down there, stuff I already seen way too many times even on serious political fora... wish I had read a couple more articles before quoting this source, jeez.
So I'll only leave a small quote that summarizes the findings and that's all, because it's straight to the point.
Remember that scientific studies of haplogroups (among other segments of genetics) are solid and more and more numerous, so don't even think about relating that "blog" to such studies, thank you.
(Agregates of serious studies shouldn't be hard to find with minimal amounts of GoogleFu, but they tend to be very technical and a bit tedious if you're not ready for walls of text. The use of a notepad being most recommended as well.)