Multiple choice

Which two structures are homologous structures?

  1. wing of bat, arm of human

  2. wing of bat, wing of butterfly

  3. arm or human, wing of butterfly

  4. wing of chicken, wing of butterfly
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A Correct answer
Explanation

Homologous structures are features in different species that share a common evolutionary origin, even if they serve different functions today. The bone structure of a bat's wing and a human arm are homologous.

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