Forelimbs of humans and whales are homologous structures with a shared evolutionary origin.
Homologous structures are the term that best describes the relationship between the forelimbs of humans and whales. Despite serving different functions, the similar bone structure and organization of their forelimbs indicate a common evolutionary origin. For example, the forelimbs of humans, whales, bats, and birds share a common structural plan, showing a shared evolutionary past.
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