Recombinant DNA
What is the normal role of restriction endonucleases in bacterial cells?

All of these
To produce RNA primers for replication
To degrade invading phage DNA
To degrade the bacterial chromosome into small pieces during replication

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Recombinant DNA
The Southern blotting technique depends on

similarities between the sequences of probe DNA and experimental DNA
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

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Recombinant DNA
Electroporation is

the process of multiplication of the cells
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
the application of high voltage pulses

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Recombinant DNA
A genomic library is

a book that describes how to isolate DNA from a particular organism
a collection of many clones possessing different DNA fragments from the same organisms bound to vectors
a database where the sequence of an organism's genome is stored
a place where the information of the genetic organization of organisms are kept.

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