The high density of 5-HT1A receptors in the basolateral amygdala and hemispheric asymmetry in the distribution of 5-HT1A receptors (Fink et al. 2009) along with studies proposing a specific role of 5-HT1A receptors in anxiety-like behaviours and emotional functioning (de Andrade Strauss et al. 2013; Morrison and Cooper 2012) leads to the question of how serotonin receptors in the left and right sides of the basolateral amygdala respond differently to anxiety-like behaviors in stressful situations. The gene discussed is HTR1A; the disease is Anxiety.