Evidence for Evolution 2

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  • Created by: alexda
  • Created on: 18-02-15 22:43
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  • The Pentadactyl Limb
    • The anatomy of the pentadactyl limb provides scientists with evidence for evolution.
    • A pentadactyl limb is a limb with five digits.
      • The limb is present in many living vertebrate species ranging from mammals, amphibians to reptiles.
        • In each of these species the pentadactyl limb has a similar bone structure but a different function.
          • This similarity in bone structure provides evidence that species with a pentadactyl limb have all evolved from a common ancestor and and this common ancestor itself evolved to have a five digit limb.
            • It is highly unlikely that all these species evolved from different ancestors if they share a similar bone structure.


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