Figure 6

Distribution of mutations in the Qβ genome. (A) Missense and (B) Silent mutations are mapped onto the genome of Qβ. Short bars represent locations of codons for tryptophan, mid-sized bars represent mutations found only in clones and full-height bars represent mutations found in populations. Mutations extending upwards show mutations found in Line 1, while mutations extending downwards from the genome represent mutations found in Line 2.