Recombinant DNA
The Southern blotting technique depends on

similarities between the sequences of probe RNA and experimental RNA
the molecular mass of proteins
similarities between the sequences of probe protein and experimental protein
similarities between the sequences of probe DNA and experimental DNA

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Recombinant DNA
Electroporation is

the process of multiplication of the cells
the application of high voltage pulses
the process of separating charged molecules through a gel maintained in an electric field
the process of combining foreign DNA to an electrically charged vector molecule

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Recombinant DNA
Bacterial cells protect their own DNA from degradation by restriction endonucleases by

having anti restriction endonucleases
methylating the DNA at the sites that the enzyme recognizes
not producing any restriction endonucleases
deleting all recognition sites from the genome

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