Recombinant DNA
The Southern blotting technique depends on

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

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Recombinant DNA
A genomic library is

a place where the information of the genetic organization of organisms are kept.
a book that describes how to isolate DNA from a particular organism
a database where the sequence of an organism's genome is stored
a collection of many clones possessing different DNA fragments from the same organisms bound to vectors

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Recombinant DNA
Vectors are

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

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