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Question

Semi-conservative replication of DNA was first demonstrated in


  1. Escherichia coli

  2. Salmonella typhimurium

  3. Drosophila melanogaster

  4. Streptococcus pneumoniae


Solution

The correct option is A

Escherichia coli


Meselson and Stahl first showed semiconservative replication in  and subsequently in higher organisms.

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