Figure 2. Admixture proportions and 90% credible regions to two genetic clusters of simulated hybrids (F1) and first–fifth generation backcrosses (1-5BC; 100 individuals in each category) between great reed warblers and clamorous reed warblers.

The higher the admixture proportion, the higher the similarity to the genetic cluster corresponding to a ‘pure’ great reed warbler genotype.