[Danny]

i never heard about the men with XX. how is that possible? tell me more; don't spare the gory details... while we're at the chromosome thing, what chromosomes do hermaphrodites and neuters have? XXY? X?

let's see... you got:

fertile males
fertile females
sterile males
sterile female
fertile hermaphrodites
sterile hermaphrodites
neuters [asexual]

and then there are all the transsexuals and stuff. phew! it isn't as simple as it sounds.

on oddworld this is what i think:

queen

king[?]

sterile male/female slaves

it is possible that there may be other fertile individuals in higher castes than slaves

i reckon that this system is maintained mainly by the glukkons, who keep the majority of the mudokons [and sligs] sterile so that they have total control over the breeding process.

as a sidenote, we know that scrabs at least do not breed this way, but have the same 'pride-type' system as lions [i.e. alpha male, females, subordinate males]. interesting? well, maybe not...