The sugar found in DNA is deoxyribose, while the sugar found in RNA is ribose.

Here's the difference:

* Deoxyribose is a pentose sugar (five-carbon sugar) that lacks an oxygen atom at the 2' carbon position.

* Ribose is also a pentose sugar but has a hydroxyl group (-OH) at the 2' carbon position.

This difference in structure contributes to the unique properties of DNA and RNA.