A mosquito preserved in amber enables the dinosaur cloning premise in Jurassic Park.
In the film’s explanation, a mosquito fed on dinosaur blood before becoming trapped in tree resin. Over geological time, the resin hardened into amber, preserving the blood inside the insect. InGen scientists extract dinosaur DNA from that blood as the starting point for genetic reconstruction.
The scientists fill missing portions of the recovered DNA with genetic material from frogs. This fictional process allows InGen to create living dinosaurs for John Hammond’s park. The amber mosquito therefore provides the story’s central bridge between extinct animals and modern biotechnology.
Real amber can preserve insects and other organisms, but usable dinosaur blood DNA surviving for roughly 65 million years is not scientifically established. The device is a science-fiction idea drawn from the novel rather than a demonstrated cloning method.