I just don't see how those same events could be replicated, since they are so random, which is why I've seen people speculate that maybe the material in the jars has some connection to Xenos, since all of the creations coming from the ooze had varying similarities (snake looking like a fingerless facehugger, squid implanting embryos, etc). These are just fan fiction theories though to make sense of it all. Im more interested in how this movie turned out the way it did, and I honestly think rewriting the script was a big mistake because we got some amalgam. It's the story of the derelict, and the first Alien, only it's not the derelict, and assumingly not the first Alien. It's confusing newcomers and die hard fans alike.