Recombinant DNA
Agrobacterium tumefaciens is

a bacterium that can be used to introduce DNA into plants
a fungi that is used to produce antibiotics in large amounts
a disease in humans that causes loss of weight
a disease in humans that causes loss of sight

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

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

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Recombinant DNA
A genomic library is

a place where the information of the genetic organization of organisms are kept.
a database where the sequence of an organism's genome is stored
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

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