The population is sustained using uterine replicator technology. Nine reproduction centers across the planet possess an assortment of ovarian tissue cultures, and by design only male children are conceived. Through military and community service, Athosians earn "Social Duty Credits" towards reproduction. Regulations also allow for a "Designated Alternate Parent" who can earn Social Duty Credits by coparenting a partner's sons. Homosexuality is generally the norm on Athos, and while partnerships are typically romantic and sexual, some are merely mutually beneficial arrangements based on finances and child-rearing.