According to research discussed in your textbook, inheriting short copies of the ______________ transporter gene predisposes people to anxiety, shyness, and negative emotional reactions in interpersonal situations
A) acetylcholine
B) NMDA
C) dopamine
D) serotonin
Answer: D
Rationale: Two possible variations of the "serotonin transporter gene" have been identified: a short copy and a long copy. People who inherit short copies from one or both parents are predisposed to anxiety, shyness, and negative emotional reactions in interpersonal situations.
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