NEET Biology question

Which of the following is not relevant to the structure of double helical DNA?

(A)The helix makes one complete spiral turn every 34Å
(B)The diameter of the helix is 20Å
(C)The distance between adjacent nucleotide is 3.4Å
(D)Each strand of helix has a backbone made up of alternating ribose sugar and phosphateCorrect

Answer: (D)

Solution

In DNA, the sugar–phosphate backbone is made of deoxyribose, not ribose; ribose is found in RNA. The other

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Question ID VK-111458