Q.

How many phosphodiester bonds are present in linear DNA having 100bp?

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a

200

b

199

c

198

d

100

answer is C.

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Detailed Solution

The number of phosphodiester bonds in a DNA molecule= 2n-2Where n is the number of base pairs.n=100bpTherefore, the number of phosphodiester bonds in the DNA molecule is (2x100)-2= 198
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How many phosphodiester bonds are present in linear DNA having 100bp?