Across
- 2. has porphyrin ring structure
- 4. helps blood clotting
- 6. fibres woven into a maze
- 8. life woven out of air by sunlight
- 10. xerox copy of a species
- 11. yellow urine
- 12. across continents
- 13. environmental factors in gene expression
Down
- 1. cereal with 6 sets of hereditary material
- 3. found in tears
- 5. sleep amidst snow
- 6. TMV did this to me
- 7. graveyard of RBC
- 9. sailors disease
- 14. multiplication nonstop