FIG. 1.

Distribution of randomly selected library clones with respect to the H. influenzae Rd KW20 genome. A map of the Rd chromosome was divided into sections, each representing 0.15 Mb. The number of clones demonstrating homology to each Rd section is noted, for a total of 684 Rd-like clones. The locations of 21 clones that contained both Rd and contiguous non-Rd sequences are shown in parentheses. Asterisks represent the positions of the six rRNA loci on the Rd genome (22). The 15 clones that contained rRNA sequence were not included in the figure, as it was not possible to determine which of the six regions was represented in each of these clones.