Cdenguerra09go Cdenguerra09go Science Answered 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________.