Audio problem: When Dr. Wren takes Cal's gun, he says, 'You really are way too trusting', but his mouth movements seem to show him saying something else. It appears to be something along the lines of 'far too trusting,' as opposed to 'way too trusting.' (01:09:30)
Audio problem: Near the end of the film, when we see the Queen's new mutation, the scene opens up by showing all the scientists attached to the wall. Dr. Gediman is rambling on and on about the Queen's 'perfect' mutation. However, it is quite clear he isn't saying any of the words. In fact, from the way his mouth moves, it looks like he's literally saying 'blah blah blah, blah blah blah'. (01:27:05)
Audio problem: In the nest, the creepy guy talking does not sync his words with his lips half the time.
Chosen answer: Well firstly the queen was probably genetically engineered, like Ripley herself. A few days might be all the time they need to have a fully grown queen created. Secondly the 8 incubated victims were only the latest batch, they had been incubating people with xenomorphs for quite a time I suspect.
lionhead
With regards to the quick growth of the alien queen, it is standard for the xenomorph in nearly every film they appear (Aliens is the only exception, the only chestburster shown in the film is quickly killed by Apone) to grow to full size in around one day. Presumably the same is true for the queen.
BaconIsMyBFF