Hybrid indices calculated for 140 individuals sampled in a hybrid population consisting of two closely related food-deceptive orchid species Orchis militaris and O. purpurea . (a) This plot gives the fraction the genome inherited from Orchis purpurea for 140 individuals. A value of 0 indicates pure O. militaris and 1 indicates pure O. purpurea. Individuals are ordered by increasing hybrid indices. (b) Bayesian inference of genotype class estimated with NEWHYBRIDS. The genotype classes are represented by colors, and individuals are represented as rows. Within each row (individual) the extent of the component colors indicates the posterior probability of an individual with respect to each genotype class.
Jacquemyn et al. BMC Evolutionary Biology 2012 12:178 doi:10.1186/1471-2148-12-178