I think what we are dealing with here, is a Queen, that is immature, and just happened to have a Predator for a host. All it says is that a Queen is not a purebred, BUT it confirms my idea that even if the Queen has extra characteristics from its host, the eggs it makes will be purebred, and not pass on the extra traits. Meaning a 2nd gen alien, from an egg made by the PredAlien Queen, if the host is human for the gen2 alien, it will be the same as an Alien from a Queen that had a human host. The Queen is not exactly a purebred, but the Alien does not need to worry about genetic dissolution, as all the eggs are made with a clean slate. I don't have a problem with this, even if it contradicts what was in a video game.