When Christmas and Science entwine

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Across
  1. 6. 1 of the 3 kings that visited Jesus
  2. 8. Largest molecule in the human body
  3. 10. Plant that makes people want to kiss
  4. 13. Famous reindeer
  5. 15. Place where Santa lives
  6. 16. 1 of the 3 stop codons
Down
  1. 1. TGCCATCGCATTAGCACCATGGCGAGC
  2. 2. Part of human body that gets its oxygen directly from the air
  3. 3. 6 CO2 + 6 H2O → C6H12O6 + 6 O2
  4. 4. Largest Christmas present ever given
  5. 5. Most abundant element in the Universe
  6. 7. First US state to recognise Christmas as a holiday
  7. 9. Discoverer of DNA
  8. 11. Country where the tradition of Christmas trees originated
  9. 12. Strongest toxin identified
  10. 14. Christmas song that was originally written for Thanksgiving