FIG. 7.

Localization of recombination junctions in PV genomes. The recombination junctions were localized by RFLP and by sequencing in homologous genomic segments flanked by two restriction sites and two nucleotides that differentiate the genomes of the parental Sabin strains. These genomic segments are indicated on the schematized genome as grey boxes (RFLP) and lines (sequencing). The data shown are from Tables 1 and 2. The numbers of recombination junctions located in the same genomic segment or in overlapping segments are given (one line per junction). The genomic regions of the PV genome are indicated as described for Fig. 1.