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The hydrophilic nature of DNA is due to the presence of :
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- thymine base
- a number of hydrogen bonds
- phosphate group
- deoxyribose sugar
Correct Option: B
The phosphate groups on DNA are ionic and charged. Each phosphate group on the DNA backbone is one unit of negative charge (-1). Charged molecules attract water and are hydrophilic. DNA has two hydrophilic polar external backbones made of sugars and phosphate groups joined by ester bonds.
