All behavior has heritable components. All behavior is the joint product of heredity and environment, but differences in behavior can be apportioned between hereditary and environment.

Can behavior be passed down genetically?

Diving a little deeper into the biological realm, she explains that we don't inherit behavior or personality, but rather we inherit genes. And these genes contain information that produces proteins — which can form in many combinations, all affecting our behavior.

How much of behavior is genetic?

Even identical twins who were raised apart from one another in separate households share such traits. Scientists estimate that 20 to 60 percent of temperament is determined by genetics.