Recombinant DNA
Problems in obtaining large amounts of proteins encoded by recombinant genes can often be overcome by using

expression vectors
BACS
YACS
all of these

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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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Recombinant DNA
Agrobacterium tumefaciens is

a disease in humans that causes loss of weight
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 sight

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