Recent Studies in Molecular Genetics Have Revealed That the 7R

Recent studies in molecular genetics have revealed that the 7R allele of the DRD4 gene has been linked to extraversion and novelty-seeking.Evolutionary psychologists hypothesized that such traits would have been adaptive in exploiting novel environments.Which of the following results was documented that supported this prediction?

A) The 7R allele is more common among nomadic populations than sedentary populations.
B) Easterners are more likely to possess the 7R allele than Westerners.
C) Women are more likely to possess the 7R allele than men.
D) The 7R allele is only expressed in childhood but not adulthood.

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