Answer;
extraversion
Step-by-step explanation;
Monozygotic (identical) twins share all of their genes, while dizygotic (fraternal) twins share only about 50 percent of them.
The trait of extraversion–introversion is a central dimension of human personality theories. Extraversion tends to be manifested in outgoing, talkative, energetic behavior, whereas introversion is manifested in more reserved and solitary behavior.
Extraversion is the state of primarily obtaining gratification from outside oneself. Extraverts tend to enjoy human interactions and to be enthusiastic, talkative, assertive, and gregarious.