Answer
A ribose ring can be opened without base, to generate the non-cyclic aldehyde form. And the loss of base-stacking interaction, could give significant flexibility to the DNA backbone.
Work Step by Step
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Lehninger Principles of Biochemistry 6th Edition
by Nelson, David L.; Cox, Michael M.
Published by
W.H. Freeman
ISBN 10:
1-42923-414-8
ISBN 13:
978-1-42923-414-6
Chapter 8 - Nucleotides and Nucleic Acids - Problems - Page 309: 8
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