_:b663963995 . _:b663963995 . _:b663963995 . _:b663963995 . _:b663963995 "1:many orthology that involves a gene in species A and one of its ortholog in species B, when duplications more recent than the species split have occurred in species B but not in species A." . _:b663963995 . _:b663963995 . _:b663963995 . _:b663963995 .