Tolerance of Recombination in MSV Differs According to the Genome Region Involved and the Degree of Divergence between Exchanged Sequences

<p>Each plotted point represents a Ti value calculated as the average fitness of a pair of recombinant viruses with reciprocally exchanged <i>MP</i> genes (cyan circles), <i>CP</i> genes (orange diamonds), <i>Rep</i> genes (blue inverted triangles), SIR (red triangles), or LIR (green squares) divided by the average fitness of their parental viruses. Error bars represent the standard deviations of Ti values. Curved lines represent quadratic regressions of Ti values against parental SIR, <i>MP,</i> LIR, <i>CP,</i> and <i>Rep</i> nucleotide sequences.