My father is an INFP(Fi>Ne>Si>Te) and my mother is an ESTJ(Te>Si>Ne>Fi). I am acually an INXJ (wich means my first function is Ni). Where did my Ni came from if not from parent-imitation? What made me predisposed to the appearance of Ni? What builds in one (in general) the predisposition for using Ni as a dominant function?