Evidence of Evolution Background



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Comparative Anatomy – Homologous Structures

Shown below are images of the skeletal structure of the front limbs of 6 animals: human, crocodile, whale, cat, bird, and bat. Each animal has a similar set of bones.



Color code each of the bones according to this key:


Humerus [ ]
Ulna [ ]
Radius [ ]

Carpals [ ]
Metacarpals [ ]
Phalanges [ ]



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