At some point in their lives,all chordates have:

Name: At some point in their lives,all chordates have:
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All chordates have a dorsal nerve cord at some point in their lives, which is one of the defining characteristics of this phylum. Jaws and gills are only present in some chordates (such as fish), while a brain and ventral nerve cord are present in all vertebrate chordates but not in some invertebrate chordates like lancelets and tunicates.

At Some Point in Their Lives,all Chordates Have