Not to be a stickler to anyone, but Cameron did say the Queen came from a molted Alien drone:
An immature female, one of the first to emerge from hosts, grows to become a new queen, while males become drones or warriors. Subsequent female larvae remain dormant or are killed by males... or biochemically sense that a queen exists and change into males to limit waste. The Queen locates a nesting spot (the warmth of the atmosphere station heat exchanger level being perfect for egg incubation) and becomes sedentary. She is then tended by the males as her abdomen swells into a distended egg sac. The drones and warriors also secrete a resinous building material to line the structure, creating niches in which they may lie dormant when food supplies and/or hosts for further reproduction become depleted (i.e. when all the colonists are used up). They are discovered in this condition by the troopers, but quickly emerge when new hosts present themselves.
Of course, Alien3 seems to take a different route in its assembly cut, with a super facehugger (granted there is another inconsistency - the s. facehugger is discovered with the ox, and the regular facehugger impregnates Ripley on the Sulaco with a Queen.) Big bloody mess, all this malarkey.
