Fig. 1From: Post-zygotic selection against parental genotypes during larval development maintains all-hybrid populations of the frog Pelophylax esculentus Typical gamete production in female and male genotypes from all hybrid P. esculentus populations and offspring types arising from the nine potential mating combinations. Female LR can produce both diploid eggs and haploid eggs. Genotypes in grey boxes do not occur among the adults in the population although they are initially producedBack to article page