One form of a gene that regulates the neurotransmitter serotonin contributes to the development of

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The form of the gene that regulates the neurotransmitter serotonin, specifically the serotonin transporter gene (5-HTT), has been found to contribute to the development of a fearful temperament. Individuals with the short allele of the 5-HTT gene may have lower levels of serotonin, which has been associated with an increased risk for anxiety disorders and a more reactive amygdala, leading to a greater propensity for fearfulness. This gene has not been linked to the development of the genome, a person's gender schemas, or Alzheimer's disease.

One Form of a Gene That Regulates the Neurotransmitter Serotonin