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Which of the following is incorrect with respect to Chargaff's rules ?

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a
Phosphate and deoxyribose sugar occur in equal amount.
b
The ratio of A +GT +Cis specific for a species.
c
There are double hydrogen bonds between A and T and triple hydrogen bonds between G and C.
d
Molar concentration of purines is equal to the concentration of pyrimidines.

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detailed solution

Correct option is B

A+ G (Purines ) to T + C (Pyrimidines ) ratio is 1:1 in a double stranded DNA.  A+T/ G+C ratio is different from one species to another.


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