Natural Selection Test Review

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Across
  1. 4. An organism with an extreme trait is best suited over the opposite extreme. (Darkest, lightest, etc.)
  2. 6. Organisms that are related will have similar _____
  3. 7. Organisms with either extreme are favored over the “average”.
  4. 8. An “average” trait is best suited to the environment.
  5. 10. Type of adaptation, ex: mating dance
  6. 11. ___________ evolution - When many different species begin to look alike due to living in similar environments
  7. 13. ________ changes occur very quickly, but they don’t happen often
  8. 14. ___________ structures - share uses, but not ancestry
  9. 15. ___________ structures - parts of the body that are similar, but have different functions
Down
  1. 1. Developed the theory of natural selection, Charles ______
  2. 2. __________ selection - such as dog breeds or produce
  3. 3. Component of Natural Selection, struggle for _____
  4. 5. ___________ structures - These are structures that seem to have no purpose
  5. 6. ___________ evolution - When one species gives rise to many
  6. 9. Animals in similar environments have similar adaptations
  7. 12. ___________ - changes occur at a slow rate