_:b663963988 . _:b663963988 . _:b663963988 . _:b663963988 "Historical homology that involves genes that diverged after a speciation event." . _:b663963988 . _:b663963988 . _:b663963988 . _:b663963988 . _:b663963988 . _:b663963988 . _:b663963988 .