dna crossword

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Across
  1. 3. received Nobel peace prize
  2. 5. addition of base pairs
  3. 6. carrier of genes
  4. 8. building blocks of dna
  5. 10. photographed dna
Down
  1. 1. base pair is replaced by another
  2. 2. base pair is left out
  3. 4. discovered 2 rules that led to discovery of double helix
  4. 7. basic unit heredity
  5. 9. messenger of dna