Respuesta :
Answer:
DNA is more stable than RNA due to the absence of a hydroxyl group in the 2' position of the deoxyribose sugar.
Explanation:
- Each RNA or ribonucleic acid molecule is composed of a pentose sugar called Ribose, a phosphate group and a nitrogenous base.
- A RNA chain is made up of a ribose phosphate backbone linked by phosphodiester bonds.
- The Ribose sugar has a hydroxyl group in the 2' position.
- This hydroxyl group is susceptible to hydrolysis in presence of alkaline condition.
- This hydrolysis causes the breakdown of the phosphodiester linkage between the phosphate group and the ribose sugar, causing the disruption of the entire RNA structure.
- Each DNA or deoxyribonucleic acid is composed of a pentose sugar called Deoxyribose, a phosphate group and a nitrogenous base.
- A DNA chain is made up of a deoxyribose phosphate backbone linked by phosphodiester bonds.
- In the Deoxyribose sugar, the 2' hydroxyl group is absent and hence it is no longer susceptible to hydrolysis under alkaline conditions.
- Hence, DNA is more stable than RNA.
