Recombinant DNA
In genetic engineering, a chimera is

a virus that infects bacteria
a fungi
an enzyme that links DNA molecules
a plasmid that contains foreign DNA

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

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

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