CLONING VEHICLES, VECTORS DEFINATION, VECTOR PROPERTIES, STRUCTURE OF PLASMID, BACTERIOPHAGE VECTORS AND ITS PROPERTIES,LIST OF VECTORS, COSMID AND PHAGEMID VECTORS, ARTIFICIAL VECTORS, BACTERIAL CHROMOSOME VECTORS, YEAST ARTIFICIAL CHROMOSOME VECTORS, YEAST PLASMID VECTORS,SHUTTLE VECTORS, FOSMID VECTORS ,TI AND RI PLASMIDS ,