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Write the main structural difference bet...

Write the main structural difference between `DNA` and `RNA`. Of the four bases, common to both `DNA` and `RNA`.

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D.N.A. - (I) The sugar present in DNA in 2−deoxy−D−(−) ribose.
(II) DNA has a double-stranded a-helix structure.

R.N.A. - (I) The sugar present in RNA is D−(−)− ribose.
(II) RNA has single a-helix structure.
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