I have a more important scientific question. Jurassic Park
is getting a 20th anniversary rerelease this year. How did I get so old?
The flip side, though: As to the hybrid thing, I don't think that's an ironclad rule... and this sort of hybridization is nothing like the real kind, when you should have even amounts of DNA from each donor. Here it's more like 99.9% dinosaur DNA and 0.1% "other".
Oh, like the bit in Superman III
when Richard Pryor exposes Superman to Kryptonite contaminated with tar. It made him turn evil instead of killing him. NOW I get it!