DNA exists in a double-stranded form whereas RNA is mainly a single stranded molecule. What is the likely reason for DNA being double stranded?

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Double stranded DNA is a more stable structure.

DNA cannot exist in the single stranded form.

It is easier to replicate double stranded DNA than single stranded RNA.

RNA strands cannot form base pairs.

answer is B.

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Detailed Solution

Double stranded DNA is much more stable and less reactive than single stranded RNA and this helps to protect our genetic code. Having a second copy of our genetic code means that there is a reference for repair in the event of a mutation or damage.

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