Genetics: The study of how traits and characteristics are passed down from parents to offspring through genes.
Serotonin: A neurotransmitter that regulates mood, appetite, sleep, and other functions. Imbalances in serotonin levels have been associated with various psychological disorders.
Dopamine: A neurotransmitter involved in reward-motivated behavior, pleasure, movement control, and learning. Dysregulation of dopamine has been linked to conditions such as schizophrenia and addiction.