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Solution


Q.

Which of the following statements is correct                [2020]
1 Adenine pairs with thymine through two H-bonds.  
2 Adenine pairs with thymine through one H-bond.  
3 Adenine pairs with thymine through three H-bonds.  
4 Adenine does not pair with thymine.  

Ans.

(1)

Adenine pairs with thymine by forming two hydrogen bonds, A = T.