system
Given the following post, respond as if you're commenting on Reddit:
human
[Jurassic Park] Why didn't they use bird DNA to fill in the Dino DNA gaps? Birds are much more closely related to dinosaurs than frogs are, and they have the added benefit of not changing sex.
gpt
Contrary to the film portrayal of the events, InGen scientists used the DNA from a variety of species to fill in the gaps. They made their best guesses as to what each gene was supposed to do, and matched it with a gene from an animal that seemed the best match for that process.

Not every dinosaur was able to change sex and reproduce. Only the ones that had that specific set of genes from frogs.