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according to chargaff’​s rule ,no.of purines=no.of pyramidines.then why uracil is not included [uracil is also a pyramidine]

according to chargaff’​s rule ,no.of purines=no.of pyramidines.then why uracil is not included  [uracil is also a pyramidine]

Grade:11

1 Answers

Absaar Shoaib
14 Points
3 years ago
Chargaff rule is basically applied only for DNA, not for RNA, because RNA normally does not exist in double stranded form. The chargaff rule is a consequence of complementary base paring of purines with pyrimidines, leading to double stranded neucleic acid. Since RNA is usually single stranded, it doesn’t apply there.
 

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