Library: in genetics research, a library refers to a collection of clonesplugin-autotooltip__default plugin-autotooltip_bigClone: Depending on the context, this word can have a few different meanings:

* In the context of genes, cloning means that the physical identity of a gene has been found, and the gene has been sequenced. * In the context of DNA, a cloned DNA fragment is one that has been inserted into some kind of representing a set of genetic information, e.g., a genomic libraryplugin-autotooltip__default plugin-autotooltip_bigGenomic library: a library generated by taking the genome of an organism, fragmenting the DNA, and cloning and archiving the collection of clones for research purposes. A good quality genomic library will have fragment sizes that are sufficient to encompass entire genes and will come close to representing the entire or a cDNA libraryplugin-autotooltip__default plugin-autotooltip_bigcDNA library: a library that is created from an mRNA sample, usually from a specific tissue source and/or cell type. The mRNAs, representing all the different genes that are expressed in that tissue, are reverse transcribed into cDNAs, which are then cloned and archived for research..