[Ultimatt]

You understand genetic similarity does not mean you look similar or come from the same tribe necessarily? Especially since the age of heavier than air flying machines.

[canoebuilder]

You understand genetic similarity does not mean you look similar or come from the same tribe necessarily?

That's exactly what it means. Knowing what we know about sexual reproduction and trait heredity what else could it mean? It's not like half your genome spontaneously arises in a zygote in some random location half way around the world.

[Practicality]

Evolution doesn't move fast enough for any technology to be relevant to the discussion of how this works.