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AIPMTAIPMT 1989Molecular Basis of Inheritance
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Solution:
DNA replication is semi-conservative and semi-discontinuous. Meselson and Stahl, 1958 by using l4N and l5N confirmed that the replication of DNA in E- coli is semi conservative. Carin, 1963 by using 3H in thymidine also confirmed semi-conservative mode of DNA replication in this bacterium.