In the year 1958 Meselson and Stahl studied the replication
of DNA in E. coli using radioactive N15 to N14, which weigh more than
the usual. Being
an experimental procedure
first. E. coli bacteria in food N15 to have multiple versions of the DNA of the bacterial
DNA, every cell is N15
2. Move the bacteria were grown in a normal N14
3. Let the bacterial cell division to the third generation
of water 4. hard of DNA by centrifugation with high speed Centrifuge.
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