Ancestry Influences the Fate of Duplicated Genes Millions of Years After Polyploidization of Clawed Frogs (Xenopus)

Allopolyploid species form through the fusion of two differentiated genomes and, in the earliest stages of their evolution, essentially all genes in the nucleus are duplicated. Because unique mutations occur in each ancestor prior to allopolyploidization, duplicate genes in these species potentially are not interchangeable, and this could influence their genetic fates. This study explores evolution and expression of a simple duplicated …