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  4. The number of hydrogen bonds between adenine and thymine in a DNA molecule is

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Q. The number of hydrogen bonds between adenine and thymine in a DNA molecule is

Rajasthan PMTRajasthan PMT 2008

Solution:

Adenine $ (A) $ is complementary to Thymine (T) and Guanine (G) is complementary to Cytosine $ (C) $ . There are two hydrogen bonds between A and T, three hydrogen bonds between Guanine (G) and cytosine $ (C) $ .