Evolution

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Across
  1. 2. Formed the theory of evolution by natural selection
  2. 6. The creation of a new species
  3. 7. The gradual change in a species over time
  4. 8. Preserved remains of an organism
  5. 9. A species that no longer exists
  6. 10. Any difference in individuals in a species
  7. 11. The favoring of a species that has the best fitness for an environment
  8. 14. The number of times an allele occurs in a gene pool
Down
  1. 1. When a single species evolves into different forms
  2. 3. A structure with little or no function
  3. 4. A trait that helps an organism survive and reproduce
  4. 5. Similar structure
  5. 12. Evolution of similar characteristics in unrelated species
  6. 13. A change in the DNA sequence of a species
  7. 14. The ability of an organism to survive and reproduce in an environment