biology crossword

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Across
  1. 3. chemical defence
  2. 6. enzymes are made of this protein
  3. 9. the base T
  4. 11. dna strands need to do this in order to be replicated
  5. 14. is damaged and makes histamine
  6. 16. the base C
  7. 17. a random change in the genetic material of an organism
Down
  1. 1. during a clinical trial half the group will be given a______
  2. 2. muscle is made of this type of protein
  3. 4. the base A
  4. 5. sequence of DNA
  5. 7. joined by a polypeptide chain
  6. 8. epidemic all over the world
  7. 10. deoxyribose nucleic acid
  8. 12. gets triggered by histamine
  9. 13. this type of mutation invoves removing a base
  10. 15. section of DNA that codes for protein