Board Thread:General Discussion/@comment-26237273-20150617140442/@comment-26237273-20150718131648

D9 fan wrote:

So we can agree on most of those. I don't think Dilophosaurus was in the Gyrosphere because it seems to be one of those herbivore only rides and having a spitting Dilophosaur wouldn't fit and it was mentioned as a reference, although I do think that it is in the park somewhere, hopefully not the Cretaceous Cruise. And yes very odd and cool to see those guys all together.

The one thing I wonder is this: So after Wu found out about the frog DNA and that it could be used for breeding, he used other animals that aren't known to switch sex. But if we assume that all 8 of the species had been recaptured, then how do they keep them from breeding? This would be a major issue as you could very easily have an overpopulated exhibit like they Gyrosphere or Gallimimus Valley where there are no carnivores. Rexy was the only T-Rex on the island so there's no chance that she'll mate but what about the others? You can't exactly change the genes of a dinosaur while it's already fully grown. If they didn't recapture the other 7 and just got Rexy because she's the biggest T-Rex to have ever been known to have existed, then the whole debate of what dinosaurs were the first 8 would be 100% guess work. I don't think Dilophosaurus was in the Cretaceous Cruise, because it would be very dangerous with his poison, while in the Gyrosphere it couldn't be a problem, because the other herbivores were much larger than it. Do you really think a Dilophosaur could manage to hunt an Apatosaurus or a Triceratops? It is not possible.

I already thought to this and tought to a possible solution. In the first film Alan said that only some species of frogs could change gender. We know that some dinosaurs had changed gender, but we don't know whether the DNA of these species of frog was used for all the dinosaurs. Now, I think that when InGen came to the island, scientists analyze DNA of all the dinosaurs and killed the ones that could change gender. So there is still the possiblity some of the dinosaurs from Jurassic World were the ones seen in Jurassic Park.