Human genes have evolved over millions of years to best adapt us to our environments - individualcharacteristics, including personality, abilities and behaviour are heavilyinfluenced by our geneticmakeup
2 - brain
Brain influence on behaviour - structure of the brain is made up of differentareas which are responsible for different behaviours
3 - nervous system
Nervoussystem influences behaviour - hormones and neurotransmitters influence behaviour
4- Genetic Factors
Geneticfactors determine behaviour - as our genesdetermine our brain and nervoussystem
