Q.

Which one of the following statements is correct ?

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An Intiative by Sri Chaitanya

a

Adenine pairs with thymine through one H-bond.

b

Adenine pairs with thymine through three H-bonds.

c

Adenine does not pair with thymine.

d

Adenine pairs with thymine through two H-bonds.

answer is D.

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Detailed Solution

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Adenine of one strand of DNA pairs with thymine of opposite strand and two hydrogen bonds are formed between them.

 (2) Adenine pairs with thymine through two hydrogen bonds and not through one hydrogen bond.


(3) Guanine of one strand of DNA pairs with cytosine of opposite strand and three hydrogen bonds are formed between them.


(4) Adenine pairs with thymine and not with cytosine.

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