Cornerstone of Biology

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Across
  1. 3. man who came up with the idea of natural selection
  2. 6. remains of organisms that once lived
  3. 8. how fossils are organized according to time
  4. 9. change in DNA
  5. 10. how well an organism can survive
Down
  1. 1. choosing a mate based on higher fitness
  2. 2. new alleles that enter the population
  3. 4. bones that are the same shape/place in different species
  4. 5. organisms that are best suited for their environment
  5. 7. random chance that alleles are lost to a population