In the context of the quantitative trait loci (QTL) approach, which of the following statements is true of the possible connection between dopamine and thrill seeking in humans?
A. People who seek out thrills should have the long form of the DRD4 gene.
B. People who have surplus dopamine tend to seek out exciting situations as a way of decreasing their dopamine release.
C. Long forms of the DRD4 gene are associated with aggressive and antisocial behavior in humans.
D. Short forms of the DRD4 gene are associated with less efficient dopamine production.
Answer: A
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