Figure 2 .

Genetic structure of Rattus norvegicus based on analyses conducted using STRUCTURE with K = 2 clusters shown in blue and orange. Each thin vertical bar represents an individual, who may be partitioned into K clusters depending on the estimated multilocus membership to each cluster. Each color represents the posterior probability of that individual belonging to a cluster. The measure ΔK from Evanno et al. (2005) indicates that K = 2 is the best-fitting model.