A clone library which contains a large number of representative nucleotide sequences from all sections of the DNA of a given genome; a random collection of DNA fragments from a single organism, linked to vectors, and cloned in a suitable host.
A collection of organisms, usually viruses, bacteria or yeast, which have been transformed by the addition of extra genes from another species. The library can be screened to find a gene of particular interest to researchers.
a collection of cloned DNA fragments which, taken together, represent the entire genome of a specific organism. Such libraries or "gene banks" are assembled so as to allow the isolation and study of individual genes. Gene libraries are produced by first breaking up or "fractionating" an entire genome. This fractionation can be accomplished either by physical methods or by use of restriction enzymes. The genome fragments are then cloned (multiplied in number) and stored for later use.