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Nonvertebrate chordates are characterized by the fact that their ________ never develops into a vertebral column.

Sagot :

Answer: notochord

Explanation: In vertebrates, the notochord is present during embryonic development and is later replaced by the vertebral column (spine). However, in nonvertebrate chordates (like tunicates and lancelets), the notochord persists throughout their life and does not develop into a vertebral column.