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After 1840, what city became the fast-growing hub of the western transportation system?
Aggression
A variety of actions that may cause physical or mental damage to the individual, others, or items surrounding them.
Physiological Basis
The underlying physical and biological mechanisms that contribute to a particular behavior, function, or process in living organisms.
MAOA Gene
A gene that codes for the enzyme monoamine oxidase A, involved in breaking down neurotransmitters; mutations can influence aggressiveness and behavioral issues.
Genetic Markers
DNA sequences that indicate the presence of a particular gene or genetic variation, often used in genetic testing and research.
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