Recombinant DNA
In genetic engineering, a chimera is

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

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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
not producing any restriction endonucleases
deleting all recognition sites from the genome
having anti restriction endonucleases

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