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I would say no; the environment (nurture) you grow up in shapes your perception and personality (nature) on how you perceive life in general. Hence, it is an interaction between nature vs nurture.
Nevertheless, I wouldn't say there aren't predisposed "personalities" in "DNA ethnicities" because each individual is born with their own innate personality characteristics and interests in life that has nothing to do with people's ethnicity(-ies) since we have no control over what ethnicity were born into.
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