Middle School Life Science Quiz
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BIOLOGICAL EVOLUTION: UNITY AND DIVERSITY
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A diagram compares a fossil organism's shoulder region and a modern organism's shoulder region. Both show a shoulder blade and an upper arm bone meeting at a joint, but the shoulder blade shape differs. The diagram labels FOSSIL vs MODERN and highlights the shoulder blade and upper arm bone to show that anatomy can be compared across time.
Which anatomical similarity is supported by the evidence in the diagram?
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