18) At a high level, animals can be placed into evolutionary groupings based on their pattern of embryonic development. One of these patterns is called deuterostome development, where the opening...

18) At a high level, animals can be placed into evolutionary groupings based on their pattern of embryonic development. One of these patterns is called deuterostome development, where the opening called the ______ becomes the ______ and the embryonic cells exhibit _______ development.

Group of answer choices