Science

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Across
  1. 3. dna packages
  2. 5. Body
  3. 7. Brains outer layer
  4. 8. band of nerve fibers
  5. 10. lower half of brainstem
  6. 12. impulse pathway
  7. 14. Heredity carriers
  8. 15. Tree-like structure
Down
  1. 1. egg-shaped structure
  2. 2. Endocrine glands
  3. 4. Transmission by genes
  4. 6. Axon-to-dendrite
  5. 9. nerve cells
  6. 11. white fatty substance
  7. 13. Front part of brain