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Goals of HGP

Which of the ...

Question

Which of the following shows the correct positions of the phosphate (P), sugar (S) and base (B) molecules in the line diagrams representing structure of DNA?

A

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B

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C

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D

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Solution

The correct option is A
DNA resembles a twisted ladder. The sugar and phosphate form the backbone of the ladder and the nitrogenous base form its rungs.

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