HTR1A and Anxiety: Offspring born to fathers who experienced trauma exhibited changes to nociceptive sensitivity, social and anxiety-like behaviour, as well as changes in expression of 5HT1A, 5HT2A, Comt, Dnmt3a, Drd2, FKBP5, NR3C1, Maoa, and Mecp2 in the adrenal gland, hippocampus, hypothalamus, prefrontal cortex, and thalamus.