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Directions: Complete each sentence.

7. Guanine, cytosine, thymine, and_____ are the four________in DNA.

8. In DNA, guanine always forms hydrogen bonds with_________.

9. The process of_______ produces a new copy of an organism's genetic information, which is passed on to a now cell.

10. The double coiled, "staircase" shape of DNA is called a________.​