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Which pair of nitrogenous bases will form a bond in a DNA molecule? - B. adenine and thymine What three components make up a nucleotide? - D. a phosphate, a deoxyribose, and a nitrogenous base Which... nitrogenous bases are needed to complete the DNA strand pictured below? Give your answer in order, from top to bottom. - B. adenine, thymine, guanine, cytosine When one DNA molecule is replicated, the result is two DNA molecules. What is true of the second DNA molecule? - A. It is identical or nearly identical to the first DNA molecule. What is the role of enzymes in the DNA replication process? - C. Enzymes split the DNA molecule into two rails and then transport corresponding nitrogenous bases to each rail. Shown below are the DNA scans for three frogs that look alike. Which frogs are identical twins? - B. Frogs A and C Shown below are the DNA scans for Frog W, Frog X, Frog Y, and Frog Z. Bands 2-4 control the presence of spots. If Frog Z does NOT have spots, which frogs DO have spots? - B. Frogs W, X, and Y [Show More]

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