It is perfectly possible that, like Ants, Glukkons are merely kept sterile by being fed a substance produced by the Queen. This happens in ants, and means that if the Queen and King die, the rest will become fertile, until a pair dominates, and the others become sterile once more. It's quite an effective way of maintaining the status quo...
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Guns don't kill people, People kill people! Using Guns.
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