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Q.

Stability of DNA is due to

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a

deoxyribose sugar

b

presence of thymine in place of uracil

c

usually being double stranded with hydrogen bonds throughout its length between the complemenetary bases.

d

a, b and c

answer is D.

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Detailed Solution

 Absence of free OH at 2ndposition DNA is less reactive and more stable. Presence of thymine at the place of uracil  confers additional stability to DNA. Being double stranded adds stability to DNA.

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Stability of DNA is due to