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

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

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Recombinant DNA
Vectors are

molecules that degrade nucleic acids
molecules that are able to covalently bond to and carry foreign DNA into cells
molecules that protect host cells from invasion by foreign DNA
molecules that help in replication

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