Chargaff’s rule is a key principle in molecular biology, stating that in DNA, the proportion of adenine (A) always equals that of thymine (T), and guanine (G) always equals cytosine (C). This A=T and G=C ratio varies between species but remains constant within an organism. This discovery helped Watson and Crick deduce the double-helix structure of DNA, showing how the complementary base pairs form hydrogen bonds, maintaining the stability and replication mechanism of the DNA molecule. This is article is about MCQ Questions on Chargaff Rule with answers. You can download this question as PDF from the download link provided in the results page of this quiz.
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