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
both (a) and (b)
None of these

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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 sight
a disease in humans that causes loss of weight

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Recombinant DNA
Vectors are

molecules that help in replication
molecules that degrade nucleic acids
molecules that protect host cells from invasion by foreign DNA
molecules that are able to covalently bond to and carry foreign DNA into cells

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