Question about the rules for transforming (SPOILERS!)
How the hell does Elizabeth change from human to alien without benefit of a big-honkin' plant that looks like her??
She falls asleep for 7 seconds and when her eyes pop open again, she's changed!
But she still has the same body! It's not a "plant clone" -- it's her!
Everyone else required a "plant clone" in order to change.
Did I miss something? And if not, was this discrepancy ever explained in the actual movie??