Multiple Choice
Which two scientists are most widely credited with establishing the double-helix structure of DNA in 1953?
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7. DNA and Chromosome Structure
DNA Structure
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In the DNA double helix, what molecules form the sugar-phosphate backbone of each strand?
A
Alternating deoxyribose sugars and phosphate groups linked by phosphodiester bonds
B
Alternating ribose sugars and phosphate groups linked by peptide bonds
C
A polypeptide chain of amino acids linked by glycosidic bonds
D
A chain of nitrogenous bases (A, T, G, C) linked by hydrogen bonds
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