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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

BVP MedicalBVP Medical 2012

Solution:

Adenine is complementary to thymine (T) and guanine (G) is complementary to cytosine . There are two hydrogen bonds between A and T, while three hydrogen bonds between guanine (G) and cytosine.