THE MOLECULAR BASIS OF INHERITANCE
DNA MAKES RNA MAKES PROTEIN
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What forms the backbone of DNA?
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Nitrogen bases
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Alternating sugar and phosphate groups
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Deoxyribose
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Explanation:
Detailed explanation-1: -DNA consists of two strands that wind around each other like a twisted ladder. Each strand has a backbone made of alternating sugar (deoxyribose) and phosphate groups. Attached to each sugar is one of four bases–adenine (A), cytosine (C), guanine (G), or thymine (T).
Detailed explanation-2: -The DNA strand’s “backbone” is constituted by pentose sugar and phosphate, while the nitrogenous bases project inside forming the bridges between the strands.
Detailed explanation-3: -The sugar in DNA is deoxyribose.
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