» Sun Aug 21, 2011 6:00 pm
In the real world, many animals are capable of switching genders willy-nilly depending simply on their environment. There's a species of fish, for example, where they're all born 'female' and the most dominant member of the school becomes 'male'. If a new fish becomes dominant, the old leader reverts to being 'female', and the new leader becomes 'male'. Some reptiles have temperature-dependent sixual determination in the egg. Komodo dragons have fixed gender after hatching, but can give live birth, lay eggs, reproduce sixually, or reproduce asixually.
My guess on the argonians is that they hatch in an androgynous state. As they grow up they switch to either a male state, or a female state, depending on the needs of the group, usually as determined by the Hist, or in non-Blackmarsh argonians, simply by ambient pheremones. The females stay with the egg clutches and the Hist (licking extra tree sap and learning magic) while the males serve as scouts. It is possible that, like an exaggerated version of the Komodo dragon, argonians actually have multiple reproductive styles available, ranging from the turtle like 'bury eggs and ignore' to an almost mammalian 'give live birth and briast feed' (OB Argonians). When the needs of the group change, genders change, but gender-switching is kept to a minimum, for evolutionary reasons.