Recombinant DNA
The piece of equipment, that introduces DNA into cells via DNA-coated microprojectiles is known as

inoculating needle
gene gun
laser
DNA probe

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Recombinant DNA
The Southern blotting technique depends on

similarities between the sequences of probe RNA and experimental RNA
similarities between the sequences of probe DNA and experimental DNA
similarities between the sequences of probe protein and experimental protein
the molecular mass of proteins

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