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प्रश्न
Which experiment provided definitive proof that DNA replication is semi-conservative?
पर्याय
Watson and Crick's X-ray crystallography studies
Chargaff's analysis of base ratios in DNA
Meselson and Stahl's experiment with E. coli in 1958
Hershey-Chase experiment with bacteriophages
MCQ
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उत्तर
Meselson and Stahl experimentally confirmed semi-conservative replication in 1958 using E. coli and nitrogen isotope labeling techniques. Their work definitively ruled out the conservative and dispersive models, establishing semi-conservative replication as the correct mechanism.
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