specialized branches of biology

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Across
  1. 2. heredity and variation
  2. 4. snakes
  3. 7. diseases
  4. 9. animal behavior
  5. 10. manipulation of DNA for useful purposes
  6. 12. shells
  7. 13. AKA developmental biology
  8. 15. tissues
Down
  1. 1. algae
  2. 3. fishes
  3. 5. fossils
  4. 6. functions of parts of organisms
  5. 8. insects
  6. 11. AKA systematics
  7. 14. fungi