Homologous recombination is a force in the evolution of canine distemper virus
(A) Major putative parents for recombinant strains. (B) Potential recombinant strains of CDV. (C) Minor putative parents for recombinant strains. The same breakpoints in different genome schematics were labeled with a red line, and the recombinant fragments were labeled with a blue dotted line. The x-axis indicated the nucleotide position along the alignment (gap 100 bp).