Bevendre

This is partially true, at least for Papillon’s canon.  Being shapeshifters, and therefore being capable of changing their own anatomy, changelings are genderfluid, adopting the gender of their preference or whichever gender is best suited to a task.  Having no reproductive organs, though fitting for the allowance of conversion, does little to encourage the propagation of a species.

Although Papi canon changelings are genderfluid and can choose whichever gender they prefer, only the Queen of a hive has the capacity to produce eggs.  As such, she becomes not only the center of the hive’s social structure, but also it’s sole hope for survival in case of emergency, hence the greater size, magic, and protective instincts on both sides of the Queen-Drone relationship.

Though a Queen is the only changeling in a hive who can produce eggs, any female changeling can carry eggs, and so to encourage genetic individuality among the offspring a Queen will often have her drones carry several eggs which will then absorb genetic material from their host, and their fertilizer.  This allows for families within the hive, as well as a direct link from all newborns to their Queen.

Just as a Queen is the only changeling who can produce eggs, she is also the only one that cannot produce semen.  Two Queens can create an offspring, such as Vespa, by joining two eggs together within one of the Queens.  This act is a rarity, and takes considerably more effort than the typical means.