_:b667765951 . _:b667765951 . _:b667765951 . _:b667765951 . _:b667765951 . _:b667765951 . _:b667765951 . _:b667765951 . _:b667765951 "Similarity that is characterized by the organization of anatomical structures through the expression of homologous or identical patterning genes." .