_:b663963996 . _:b663963996 . _:b663963996 . _:b663963996 . _:b663963996 . _:b663963996 . _:b663963996 . _:b663963996 . _:b663963996 "1:many orthology that involves a gene in species A and its ortholog in species B, when duplications more recent than the species split have occurred in species A but not in species B." .