LOCATIONS OF GENETIC-MARKERS ON THE PHYSICAL MAP OF THE CHROMOSOME OFNEISSERIA-GONORRHOEAE FA1090

To increase the utility of the previously constructed physical map of the chromosome of Neisseria gonorrhoeae FA1090, 28 additional genetic markers were localized on the map. Cloned gonococcal genes were used t o probe Southern blots of restriction enzyme-digested DNA separated on pulsed-field gels, thus identifying the fragment in each of several d igests to which the probe hybridized and the map location of each gene . The addition of the new markers brings the total number of mapped lo ci for this strain to 68; the locations of all of those markers on the updated map are shown.