re: How do you explain the origin of the various human races scientifically?

quote:

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you say this but in the past like 400 years or so, we have seen one race emerge (the latino/hispanic race)

it doesn't take THAT long

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It takes like 3 generations to make a new breed of dog.

Makes sense.

You have to have marked differences to begin the new shift in genotypes though, and that might be where the OP is stuck.