Recombinant DNA
For gene probes to be useful they must

be large enough to contain gene-specific sequences
be labeled in some manner to allow detection
None of these
both (a) and (b)

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Recombinant DNA
Agrobacterium tumefaciens is

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

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