Multiple Choice
In double-stranded DNA, guanine always forms hydrogen bonds with which base?
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7. DNA and Chromosome Structure
DNA Structure
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In the DNA double helix, what are the “sides” of the ladder (the sugar-phosphate backbone) made of?
A
Amino acids linked by peptide bonds
B
Alternating ribose sugars and phosphate groups
C
Alternating deoxyribose sugars and phosphate groups
D
Paired nitrogenous bases held together by hydrogen bonds
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