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9. | A purified DNA sample of leaf contains 20.0 mole of guanine. Calculate the approximate percentage of purine residues? | |
A. | 30% | |
B. | 40% | |
C. | 50% | |
D. | 60% | |
Answer: Option A | |
Explanation: | |
According to chargaff’s rules, C=G= 20%; A=T |
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