As described higher than, flatworms are almost completely hermaphroditic5,6, although the schistosomes have progressed gonochorism and sex chromosomes de novo. This group of species is therefore particularly interesting for studying the transition from hermaphroditism to gonochorism. Here we use Schistosoma mansoni and its hermaphroditic outgroups to study evolutionary strata https://ageplayporn.motorcycles/pregnant/couple_hires_escort.html