Multiple Choice
In double-stranded DNA, guanine (G) always base-pairs with which nitrogenous base?
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7. DNA and Chromosome Structure
DNA Structure
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In the DNA double helix, which two types of molecules form the sugar-phosphate backbone of each strand?
A
Deoxyribose sugars and phosphate groups
B
Ribose sugars and phosphate groups
C
Deoxyribose sugars and nitrogenous bases
D
Nitrogenous bases and phosphate groups
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