Fig S1. Divergence of UTP14 retrogene peptides encoded within the genomes of African elephant and aardvark. from Lineage-independent retrotransposition of UTP14 associated with male fertility has occurred multiple times throughout mammalian evolution

Alignment of the peptide sequence encoded by the African elephant and aardvark UTP14 retrogenes demonstrates that these two retrogenes have accumulated a large number of amino acid substitutions and several in frame deletions since these two species diverged from a common ancestor over the 50 million years ago. In spite of these changes the UTP14 retrogenes in both species constitute intact open reading frames that can encode functional proteins.