Why one oxygen is less in deoxy ribose(C5H10 O4) sugar than that of the ribose sugar(C5H10 O5)???

Dear student,
Please find below the solution to the asked query

Deoxyribose sugar is a modified sugar that lacks one oxygen atom. This is important so as it make the DNA less reactive and more stable and hence a better genetic material than RNA. Also this helps the enzymes to distinguish and recognise DNA and RNA easily.

Hope this information will clear your doubts about the reason for presence of one oxygen less in deoxyribose sugar than that of the ribose sugar.

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