So I understand threads like this come up every so once and a while-so here it goes-what are the limits of which humans can reproduce viable offspring? Zeltrons? Chiss? Miraluka? Does a similar principle apply to Duros and near Duros species? Chiss? Nagai? How common are such pairings in IU? Are there any medical complications or cultural issues that have to navigated? Let the speculation begin!