Subject: how come all humans have 10% of their dna from the tsetse fly

is that the original evidence of out of africa model since tsetse fly live only in 
a small region inside africa, and we must got that tsetse dna (junk dna) in equal 
among all humans even the eskimos) because we inherited from our common ancestor 
who lived in that area?

[Moderator adds: I believe this question is asking about mariner elements -- SM]

Re: how come all humans have 10% of their dna from the tsetse fly