NEET 2001 Chemistry question

Which of the following is correxct about H-bonding in nucleotide : -

(1)A–T G–CCorrect
(2)A–G T–C
(3)G–T A–C
(4)A–A T–T

Answer: (1)

Solution

In the DNA double helix the bases pair through hydrogen bonds in a specific, complementary way: adenine pairs with thymine by two hydrogen bonds (A=T) and guanine pairs with

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Question ID VK-088797