Factual error: In reality, the normal air pressure of a room (about 14.7 psi) would be nowhere near enough to force the newborn's body out through such a tiny hole.

Alien Resurrection (1997)
1 factual error - chronological order
Directed by: Jean-Pierre Jeunet
Starring: Sigourney Weaver, Winona Ryder, Ron Perlman, Dan Hedaya, Gary Dourdan
Other mistake: In the scene where Ripley throws the basketball at Johner, Christie says to Ripley, "Ok, I've got a new game, tag .." He hits her with the handles straight in the face once, he misses the next shot, misses again, and Ripley hits him to the ground, but you neither see or hear the handles fall. (00:23:15)
More quotes from Alien Resurrection
Trivia: Purvis is one of the human hosts for an alien and it rips through his chest on the betty. In an episode of The X-Files, the man who plays Purvis plays a scientist who is a human host of an alien which burst through his chest.





Answer: In Alien 3, Ripley discovers there was an Alien queen embryo growing inside her, so she chose to kill herself. By cloning her, scientist were hoping the Alien queen embryo she had in her at the time of her death would also become cloned, which finally happen after the 8th try. This is also why the Alien queen they extracted from Ripley has some human traits.
Bishop73