Cultural Attachment ... where does it originate from?

Is it in our DNA?
Where is cultural attachment's foundation?  Is it in our DNA ... Is it in our genes ... Is it in our blood memory?  Is it genetic?  How do we as Indigenous people connect to our culture? 

Hey you ... Indigenous one ...You know what I am talking about, you have felt it.  There are times in person's life when they thirst for the learning of their culture.  They thirst for that connection to the people ... to the land ... to the ancestors ... the ceremonies ... or to the language ... they seek it out and want to be a part of it.  To be a part of the culture. 

But what exactly is that?  Why do we want to connect to it and how do we do it?