Arrayed library: An individual primary recombinant clones (hosted in the phage, cosmid, YAC, or other vector) which are placed in two- dimensional arrays in microtiter dishes. Each primary clone can be recognized by the identity of plate and the clone location (which are row and column) on that particular plate. Arrayed libraries of such clones can be used for various applications, including screening for the specific gene or genomic region of interest as well as for physical mapping. Information gathered on the individual clones from various genetic linkage and physical map analyses is entered into the relational database and is taken in use to construct physical and genetic linkage maps simultaneously; clone identifiers serve to interrelate the multilevel maps.