By itself,the DD genotype is

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The DD genotype is a genetic variation that affects the function of the dopamine neurotransmitter system, which plays a role in motivation, reward, and movement control. While some studies have suggested a potential association between the DD genotype and impulsivity or overactivity, the evidence is mixed and not conclusive. Moreover, genetic factors are only one of many factors that contribute to complex behavioral traits like impulsivity or oppositional behavior. Therefore, it is more accurate to say that the DD genotype is unrelated to impulsivity or overactivity, and should not be used as a sole predictor or explanation for complex behaviors.

By Itself,the DD Genotype Is