Backbone is the body part that represents the notochord in vertebrates.
Notochord is a flexible rod-like structure of mesodermal cells that is present in chordates and early embryo of vertebrates. It is responsible for its role in nervous system development. After vertebrate development, it becomes part of the vertebral column.
So we can conclude that backbone is the body part that represents the notochord in vertebrates.
Learn more about vertebrates here: https://brainly.com/question/10714806
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