Figure 3.
Allele frequencies, wild genotype frequency and population fitness over time, following the release of killer–rescue strains with homozygous fitness costs, cK2 and cR2, each equal to 0.1, and heterozygous fitness costs, cK1 and cR1, each equal to 0.05. (a) Single release of the homozygous killer–rescue strain at a 2 : 1 ratio relative to the wild population, resulting in a K and R initial frequency of 0.66. (b) As in (a) except that there is a 1 : 2 release, initial frequency of 0.33. (c) Releases at 1 : 2 ratio in each of the first four generations, one killer gene. (d) A single release at a 1 : 2 ratio of a strain that is homozygous for two insertions of K and one insertion of R. Dash-dotted line, wild-type (kkrr); dotted line, K allele; dashed line, R allele; solid line, mean fitness.