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Across 2. The monomer of DNA 4. connects to guanine 7. another term for base pair but includes the sugar and phosphate groups also (2 Words) 8. a long strand of DNA all coiled up 9. nitrogenous base 11. chemical bond where electrons are shared between atoms (ex. sugar to phosphate group (2 Words) 12. the rule of how nitrogenous bases are paired: A-T, G-C ( - = hydrogen bond) (2 Words) 13. Structure of DNA (2 Words) 15. The spiral shape of DNA like a staircase (3 Words)

Down 1. group that covalently bonds to the deoxyribose sugar along the sides (15 Words) 3. A, T, C, and G; all living organisms use the same 4-letter code to make proteins (2 Words) 5. the chemical bond between two polar molecules (2 Words) 6. the passage of genetic instructions 10. one side of DNA is upside down and the other is right side up (3' to 5', 5' to 3' 14. All of the chromosomes of a species (ex. humans have 2 pairs of 23 for a total of 46