Evolution

       Is the process by which modern organisms have descended from ancient ones. The most common way evolution is brought about in conversations is through the theory of evolution.

 

The Theory of Evolution

        Evolution is referred to as a theory because it's a well-supported explanation for the change from ancient organisms to modern-day organisms.

 

Some important vocabulary that you should take note of;

  • Homologus Structures - are similar in appearance, but may have different functions
  • Analogous Structures - similar in appearance and function, but are not the result of shared ancestry

 

 

 

 

 

 

 Structures such as butterfly wings and bird wings are  analogous. Both use their wings to fly. And the appearance of their wings are somewhat similar, but they are no where near related.



 
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