Figure 2.

Quasispecies variation in CCMV population in different hosts. Mutation frequency of individual CCMV-Car1 isolate and Car1-mix culture (A, C) and CCMV-Car2 isolate and Car2-mix culture (B, D) in passages zero and ten of cowpea and Nicotiana benthamiana (Nb) plants. Frequencies were calculated by counting partially fixed mutations as single events (A, B) or as multiple independent events (C, D). Levels of variation were compared for single and mixed infections, and those with significantly higher levels are marked with an asterisk. Error bars correspond to standard errors.