Do you think introversion can run in the family/be genetic?

ScorpioDW
I know this is a weird question lol but I was just sitting here thinking about it and all of my immediate family (which Is not that many by the way, I only consider 6 , including me, my immediate family, I have a small family :p) are pretty introverted. The younger ones (including me) are on the quiet side. And the older folk were never the type to go to parties like that and are also on the quiet side. S
We all don't like being around people too long. We can all be ourselves around each other, trust me, it's not quiet when we're all in the same room haha but we're more quiet when we're out. And it just makes me go "hmm, how is there not one extroverted person in my immediate family?" It may not be genetic but do you think we somehow adapted to being introverted because of the other family members around us? Or is it something you're just born with and we all just so happen to be introverted?
Do you think introversion can run in the family/be genetic?
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