Can we clone a dinosaur?
Not at present. Scientists cannot clone a T. rex, because nobody has found the dinosaur DNA they would need. A fossil can preserve the shape of a bone, or traces of ancient tissue, without preserving a set of genetic instructions that could actually be used.
Why DNA matters
DNA carries the genetic information that living cells work from. To clone an extinct animal you need far more than the shape of its skeleton.
And DNA breaks down over time. T. rex lived tens of millions of years ago, which makes recovering the information needed for cloning an enormous problem.
The mosquito in amber
In Jurassic Park, scientists get dinosaur blood out of a mosquito trapped in amber. It is an inventive way to start a story, but nobody has ever recreated a dinosaur like that.
Amber can preserve what an insect looked like. That does not mean it preserves blood, or the usable dinosaur DNA the film depends on.
Fragments are not a complete genome
Researchers do sometimes study traces of ancient molecules in fossils. But finding a trace is very different from recovering all the genetic information needed to clone an animal.
In the film the gaps are filled with frog DNA. That cannot simply bring back the missing dinosaur information. Scientists would have to know what belonged in those gaps in the first place.
Birds are already living dinosaurs
Birds are the part of the dinosaur family that survived, and they evolved into the many species we see today. Nobody recreated them in a laboratory.
A sparrow is a living dinosaur, but it is not a T. rex. Being related does not give us a simple recipe for turning one into the other.
What fossils can tell us instead
Bones, teeth, tracks and feather impressions help scientists piece together ancient animals and how they lived. That knowledge is valuable, cloning or no cloning.
Visit a museum, compare the cards, or draw an animal using the evidence described in these guides.
Questions kids ask
- Can scientists clone T. rex now?
- No. They have not recovered the genetic information they would need.
- Would a beautifully preserved bone solve the problem?
- Not on its own. A bone that has kept its shape has not necessarily kept any usable DNA.
- Why does it work in Jurassic Park?
- Because the film invents a scientific method to make its story work.
- Is bringing back a mammoth the same problem?
- No. Mammoths lived far more recently, so their remains offer different possibilities and different difficulties. None of that makes it possible to clone a T. rex.
- Do living birds count as dinosaurs?
- Yes. They belong to the dinosaur group, and they got here by surviving and evolving, not by being cloned.
- Why study fossils if we cannot clone the animals?
- Fossils show us the animals’ shapes, their relatives, where they lived and how they behaved. They are evidence of the history of life.
Remember this
- A fossil that keeps the shape of a bone has not necessarily kept its genetic information.
- A mosquito in amber is not a ready-made supply of dinosaur DNA.
- Watch a bird and you are watching a member of the dinosaur family, alive today.