Using DNA samples taken from the mummies King Tut and nine of his relatives, the scientists were able to create a five-generation family tree for the boy pharaoh.
Tests revealed the mummy above, known as the Younger Lady, to be King Tut's mother—and his aunt. Her identity remains a mystery, but whoever she was, she sired the boy king with her brother, Pharaoh Akhenaten.
Regarding the revelation that King Tut's mother and father were brother and sister, Pusch said, "Inbreeding is not an advantage for biological or genetic fitness. Normally the health and immune system are reduced and malformations increase," he said.
Some Egyptologists have speculated that King Tut's mother was Akhenaten's chief wife, Queen Nefertiti—made famous by an iconic bust (Nefertiti-bust picture). But the new findings seem to challenge this idea, because historical records do not indicate that Nefertiti and Akhenaten were related.
(See "Nefertiti's Real, Wrinkled Face Found in Famous Bust?")