As outlined above, flatworms are almost exclusively hermaphroditic5,6, however the schistosomes have evolved gonochorism and intercourse 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 and https://badguy.cyou/news/hardcore/prettydirty_porn.html