Analogous vs Homologous Structures

Analogous vs Homologous Structures
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  • Hi, I'm Ollie the orca and I have a fin for a tail!
  • Hi, I'm Sandy the shark and I have a fin for a tail! 
  • Although we both have fins to help us swim through the water, they are analogous structures. They have the same function, but different internal structure and evolved independently from each other.   
  • I'm Hannah human and I have hands.
  • I'm Barry bat and I have wings.
  • I'm Harvey horse and I have hooves.  
  • All of our forelimbs have very different functions. 
  • Although they appear different on the outside, our forelimbs all evolved from a common ancestor and have the same number of bones internally.  They are called homologous structures.
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