Chapter 16/17 Crossword- Nate Brighton

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Across
  1. 3. Darwin found 14 types of what on the Galapagos
  2. 6. Determines the age of fossils by comparing them with those in other layers
  3. 7. Tells us looks, size, shape, where or how they lived
  4. 11. Bodily structures that are similar in structure but different in function
  5. 12. Middle of the curve has a higher fitness
  6. 14. Where did Darwin set out on his voyage
  7. 15. What type of single cells appeared about 1.8 billion years ago
Down
  1. 1. Earth didn't have oxygen until
  2. 2. Structures that serve no function but useful structures in earlier ancestors
  3. 4. One end of the bell-curve has a higher fitness
  4. 5. Thought of evolution by acquired traits
  5. 8. Formation of a new species
  6. 9. Proposed how evolution works and through natural selection, creatures change overtime
  7. 10. Bodily structures that are same in function but not structure
  8. 13. Highest frequency of the allele is in the middle