Recombinant DNA
Charged molecules are separated based on varying rates of migration through a solid matrix when subjected to an electric field. This technique is known as

gel electrophoresis
autoradiography
blotting
photoreactivation

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Recombinant DNA
Electroporation is

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

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

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

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Recombinant DNA
The advantage of using DNA polymerases from thermophilic organisms in PCR is that

All of these
the DNA polymerases of these bacteria never make mistakes while replicating DNA
the DNA polymerases of these bacteria can withstand the high temperatures needed to denature the DNA strands
the DNA polymerases of these bacteria are much faster than those from other organisms

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