There is also a theory that the younger lady is Meritaten, daughter of Akhenaten and Nefertiti, and wife of Smenkhare, based on a study of the alleles inherited by Tutankhamun. The theory goes that Meritaten married Smenkhare, believed to be her uncle, and thereby making Tutankhamun a maternal grandson of Akhenaten. The theory holds weight as inbreeding makes it harder to distinguish the generations, but there is one problem with this theory.