I suppose a DNA check may one day confirm who Tutankhamen's father was. But 1 Kings 11:11/12 does say that the kingdom would be taken from "his son", and given to an official, which is what happened after Tutankhamen died. Ay was probably the prophet Ahijah.
According to Andrew Collins the only textual evidence for Tutankhamen's father is on a granite lion statue at Soleb in Sudan in which the boy-king makes reference to his father Nebmaatre Amenhotep.
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