The Cloned Queen was the result of a 10-year project conducted by the USM to recreate the Xenomorph XX121 species for use as a biological weapon. Using blood samples taken from Ellen Ripley by Jonathan Clemens on Fiorina "Fury" 161, the USM succeeded in creating a clone of Ripley and with her the Queen Chestburster that had been growing inside her at the time of her death. Once the Ripley clone was fully grown, the infant Chestburster inside was surgically removed and allowed to grow to the Egg-producing stage, at which point her Eggs were harvested and used to impregnate a group of civilians kidnapped by the crew of the Betty.