Sometimes, after biting a dinosaur, the mosquitoes would land on the branch of a tree and get stuck in the sap.

10 seconds sound clip from the Jurassic Park (1993) movie soundboard.

You can hear this line at 00:25:27 in the Blu-ray version of the movie.

Quote context

[...]

- Just one drop of your blood contains billions of strands of DNA, the building blocks of life.

- A DNA strand like me is a blueprint for building a living thing.

- And sometimes animals that went extinct millions of years ago, like dinosaurs, left their blueprints behind for us to find.

- We just had to know where to look.

- A hundred million years ago, there were mosquitoes just like today. And just like today, they fed on the blood of animals. Even dinosaurs.

- Sometimes, after biting a dinosaur, the mosquitoes would land on the branch of a tree and get stuck in the sap.

- After a long time, the tree sap would get hard and become fossilized, just like a dinosaur bone, preserving the mosquito inside.

- This fossilised tree sap, which we call amber, waited for millions of years with the mosquito inside until Jurassic Park scientists came along.

- Using sophisticated techniques, they extract the preserved blood from the mosquito, and bingo: Dino DNA!

- A full DNA strand contains three billion genetic codes.

[...]