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Question

In double strand helix structure of DNA, heterocyclic base cytosine forms hydrogen bond with:

A
adenine
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B
guanine
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C
purine
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D
thymine
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E
uracil
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Solution

The correct option is A guanine
Base-guanine of DNA-structure forms hydrogen bond with cytosine to get double strand helix structure.
AT
CG (pairing)

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