Deoxyribose is the name of the sugar found in the backbone of dna

The “backbone” of DNA is formed by sugar-phosphate-sugar chain and nitrogenous bases are faced inside. Within a polynucleotide chain, the two nucleotides are linked by phosphodiester bond. In nucleotide, phosphoric acid and pentose sugar( deoxyribose) is bonded with phosphoester bond. And pentose sugar and nitrogenous bases are bonded with N-Glycosidic bond. The two strands of DNA are held together by Hydrogen bond which are formed between nitrogenous bases of opposing strand

The double helix looks like a ladder that has been twisted at both ends. It is made of three component parts; a sugar, phosphate groups, and nitrogen bases. The sugar that makes up the backbone of the DNA molecule is called deoxyribose. It is a 5-carbon sugar that is interspersed with the phosphate groups, forming a repeating pattern.
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The backbone of dna strand is made from alternating phosphate and sugar residues