Well, I'm not religious...haven't been for about 12 years (used to be Christian), but this question strikes me as odd.
multiple ethnicities/cultures
Quote:If not evolution; gene reorganization, etc how?
Cultures are due to geography and socialisation, and have nothing to do with evolution or genes.
Ethnicity - I take it you mean different races.
As an observation, I don't think that even Christians deny the fundamentals of natural selection (it has many proven examples...easy evidence is how many animals go white when tamed...mice being the easiest example), though perhaps they may deny the full extent of natural selection equalling macro evolution (which has never been proven that I know of). Why then would not a basic natural selection not apply to humans? I personally can't see it as inconsistent with what I know of Christianity.