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Across 3. Helicase unwinds DNA double helix, giving 2 template strands. (3 Words) 8. the process of making a copy of DNA (2 Words) 10. Directionality of 2 DNA strands 11. deoxyribonucleic acid, a self-replicating material present in nearly all living organisms, that carries genetic information. 13. rule that describes how nucleotides form bonds in DNA: adenine (A) always bonds with thymine (T) guanine (G) always bonds with cytosine (C) (3 Words) 18. Bonds holding together the double helix (2 Words) 19. the nucleotide triplets of DNA and RNA molecules that carry genetic information in living cells. (2 Words) 20. Base that pairs with Guanine

Down 1. 2 newly made molecules re-wind (3 Words) 2. New nucleotides are added the each template strand by the rules of base pairing: A for T and G for C. (3 Words) 4. two strands of nucleotides wound about each other; structure of DNA (2 Words) 5. An enzyme that catalyzes the formation of the DNA molecule. (2 Words) 6. DNA -> RNA -> Protein (2 Words) 7. monomer of nucleic acids made up of a 5-carbon sugar, a phosphate group, and a nitrogenous base 9. Method of DNA replication in which parental strands separate, act as templates, and produce molecules of DNA with one parental DNA strand and one new DNA strand 12. Cytosine and Thymine, 1 ring nitrogen bases. 14. Base that pairs with Cytosine 15. Adenine and Guanine, 2-ringed nitrogen bases. 16. Base that pairs with Thymine 17. Base that pairs with Adenine