About 50,000 animal species are vertebrates,yet only some vertebrates then went on to evolve four limbs.This tetrapod feature is considered to be a/an ________ of vertebrates.

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Quizplus · Accepted Answer

The tetrapod feature is only found in some species of vertebrates, meaning it is a derived character that evolved later in the lineage. An ancestral character would be present in all vertebrates, while a homologous character would be shared by different species due to a common ancestor. An analogous character would be a similar feature that evolved independently in different lineages.

About 50,000 Animal Species Are Vertebrates,yet Only Some Vertebrates Then