Evidences of Evolution

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Across
  1. 3. a homology that shows similarity in molecular structures between different organisms, indicating that they share a common ancestry
  2. 5. a form of selection where both extremes on the bell curve have high fitness
  3. 9. Preserved remains or traces of ancient organisms
  4. 10. a form of selection where the middle adaptation has the highest fitness
  5. 11. similar in structure despite potentially having different functions, and serve as evidence of descent from a common ancestor
Down
  1. 1. a biological theory that explains how species change over time and adapt to their environments
  2. 2. a form of selection where one extreme on the bell curve has the highest fitness
  3. 4. how species evolved in specific regions over time due to continental drift and isolation
  4. 6. structure in an organism that has lost most or all of its original function through evolution
  5. 7. any heritable trait that helps an organism, such as a plant or animal, survive and reproduce in its environment
  6. 8. structure found in different species that perform a similar function but have different evolutionary origins