Evolution #2

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Across
  1. 1. the formation of a new species
  2. 7. changes in a gene pool by chance events
  3. 9. the range of phenotypes within a species
  4. 10. the highest level of classification of living things
  5. 11. a theory about the origin of the diversity of living things
Down
  1. 2. where many species form from divergent evolution
  2. 3. one of four selection pressures
  3. 4. living things that can interbreed to produce fertile offspring
  4. 5. the loss or disappearance of a species from Earth
  5. 6. a change in the genetic code leading to genetic variation
  6. 8. changes in a gene pool by emigration and immigration