Graphic summary of the number of microchromosomal (dark shading) and macrochromosomal (light shading) cosmids having 0, 1, 2, 3, 4, and 5 CGI-like fragments. The majority of macrochromosomal cosmids have no CGI-like fragments, whereas most microchromosomal cosmids have one or more CGI-like fragments.