I never understood why Crichton used frog dna instead of bird dna to fill in the gaps.
Especially when he seemed to be on the "dinosaurs as birds" side of science.
In Jurassic Park, you'd think the inGen scientists/geneticists would've been smart enough to select a breed of frog NOT known to spontaneously change gender in a single-sex environment. Dr. Grant knew this pretty much just off the top of his head and he was hardly an expert in reptilian/amphibian genetics. How Dr. Wong (?) not know to select a breed of frog that couldn't do this?