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| 1. |
What makes the backbone of DNA????? |
| Answer» 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 | |