Skip to main content
Move the World.

Scientists don't need a 100-million-year-old mosquito that's been perfectly preserved in amber to get their nitrile gloves on dinosaur DNA; it's alive and well, clucking around inside every chicken on the planet.

It's true that dinosaurs went extinct, but they never really left us. Their descendants, modern day birds, are still thriving with prehistoric dinosaur DNA in their genetic history. Scientists are now able to roll back the mutations that have occured over eons to, in a sense, "recreate" dinosaurs.

So... Are Birds Dinosaurs? 

No; birds aren't dinosaurs, but they're the closest thing we've got. At the end of the Cretaceous period roughly 66 million years ago, an asteroid wiped out 75% of life on Earth. Among the survivors were a small group of ground-dwelling birds: the ancient ancestors of modern day chickens.

The birds we know and love today, wattles and all, haven't undergone many evolutionary changes since then. Although crocodiles, as a species, are older than chickens, they existed alongside the dinosaurs like neighbors rather than family.

Chickens are actually direct - albeit petite - descendents. As a result, chicken DNA is surprisingly most closely related to dinosaur DNA. 

Using Birds to Study Dinosaur DNA

Working specifically with chickens, Arkhat Abzhanov, genetics researcher at Imperial College London, and Bhart-Anjan Bhullar, who's involved in similar research at Yale, are finding novel ways to study dinosaurs and evolution.

Abzhanov compared chickens to reptiles and other birds that have undergone major evolutionary transformations, looking specifically at the DNA and skeletal structure of skulls, beaks, and snouts.

Studying these features in detail makes it possible to ask questions like, "What sort of genetic mutations are responsible for the emergence of a beak from a reptilian snout?".

To model these physiological observations, Abzhanov uses a morphological space, which is a conceptual tool that applies analytics to recording and predicting evolutionary changes in a 3-dimensional space.

With this model, he's able to use observable data to demonstrate and theorize how a species changes over time, or throughout the course of development from juvenile to adult - even when there's a gap in the fossil record.

Chicken DNA is surprisingly most closely related to dinosaur DNA.

Morphospace modeling combined with a thorough analysis of genetics enabled Abzhanov to begin to understand what sort of genetic mutations lead to the observed changes in anatomy. His research focused specifically on the genetics of the bones that make a snout or beak.

After analyzing data from many species, he was able to identify the beak gene. By blocking how the specific gene expressed, his lab produced a chicken embryo that developed a snout instead of a beak - exactly as the morphospace model had predicted.

Abzhanov's goal is to understand the molecular basis for a major transition in evolution. It's not to create chickens with dinosaur snouts, so the genetically modified chicken embryos were never hatched.

With additional research, a chicken's entire face could be gradually reverted to its ancestral condition. There are other scientists currently performing similar research but looking at tails, wings, feathers, and feet, to try to understand how genes change each specific characteristic. 

Do We Really Want to Bring T-Rex Back?

It'd be much simpler to answer all our questions about prehistoric life by observing it in the flesh, but we're all too familiar with the violent success that was Michael Crichton's Jurassic Park. Without even mentioning the ethical implications of cloning an extinct species, there are other reasons it's probably not the best idea.

It's impossible to predict all the potential consequences of raising an extinct species from the dead. Doing so could have a profoundly detrimental effect on modern species, or open up new pathways for the evolution of dangerous zoonotic diseases.

The lab produced a chicken embryo that developed a snout instead of a beak.

Thankfully, we can all sleep soundly because science is still a long way from even approaching the ability to hatch a T-Rex from a chicken egg. Plus, cloning dinosaurs isn't the purpose of Abzhanov's research.

Dinosaur DNA is still here; it's been passed on by the very process of life itself. Abzhanov's research is about appreciating the incredible legacy we all carry inside ourselves. Ultimately, the knowledge gained from this research could help scientists crack the code for all DNA.

People, animals, and even plants, all hold billions of years of evolution in our cells, veritable tomes of genetic history. By seeking to understand the incredible complexity of all this, we can begin to develop new technologies.

The knowledge gained from this research could help scientists crack the code for all DNA.

Practical applications of the information gained through researching genetic evolution could include engineering better livestock and crops, treating congenital conditions, preventing genetic diseases, and curing other developmental disorders.

With more research like Abzhanov's, scientists might eventually be able to map out precisely how DNA produces the sophisticated biology within us. If genetic science reaches this level of transparency, the possibilities for modification and creation will only be limited by our imaginations.

For more interesting news about the people and ideas that are changing our world, subscribe to Freethink.

Up Next

Fossil Finds
What Dinosaur Poop Tells Us About Ancient Life
Coprolites and dinosaur poop
Fossil Finds
What Dinosaur Poop Tells Us About Ancient Life
Coprolite, aka dinosaur poop, is giving scientists a surprising glimpse into the world of the dinosaurs. Learn what industry leader Karen Chin has been learning from dino dung.
By Tien Nguyen

Coprolite, aka dinosaur poop, is giving scientists a surprising glimpse into the world of the dinosaurs. Learn what industry leader Karen Chin has been learning from dino dung.

Dispatches
Your DNA Is Not the Same in Every Cell
Your DNA Is Not the Same in Every Cell
Dispatches
Your DNA Is Not the Same in Every Cell
Your body began with a single cell and a single genetic code. But it didn't stay that way for long.

Your body began with a single cell and a single genetic code. But it didn't stay that way for long.

Innovations in Sustainability
Modifying Poplar Tree Genes to Fight Pollution
genetically modified poplar trees
Innovations in Sustainability
Modifying Poplar Tree Genes to Fight Pollution
The number of poplar trees around the world has doubled, but a chemical compound in their leaves means they might be doing more harm than good.
By Sarah Wells

The number of poplar trees around the world has doubled, but a chemical compound in their leaves means they might be doing more harm than good.

Superhuman
Can Genetically Modified Pigs Be the Key to Treating Rare Diseases?
Can Genetically Modified Pigs Be the Key to Treating Rare Diseases?
Watch Now
Superhuman
Can Genetically Modified Pigs Be the Key to Treating Rare Diseases?
When it comes to rare diseases, doctors often don’t have enough patients to determine the effectiveness of various treatments. Now, scientists are breeding pigs with the same genetic code as people with a disease in order to create a pool of test "patients" unlike any before.
Watch Now

There are thousands of diseases known to modern medicine without any cure or treatment. Many are too rare to get much attention from doctors, governments, or drug companies. But the gene editing tool CRISPR is offering hope for people with rare and hard to study diseases, like the genetic disease known as NF1. There are tens of thousands of Americans with this tumor-causing nerve disease, but because it has over 4,000...

Food
"Doomsday" Seed Vault Now Contains Over 1 Million Samples
seed vault
Food
"Doomsday" Seed Vault Now Contains Over 1 Million Samples
Norway's Svalbard Global Seed Vault, also known as the “Doomsday” Vault, now contains more than one million varieties of seeds from across the globe.

Norway's Svalbard Global Seed Vault, also known as the “Doomsday” Vault, now contains more than one million varieties of seeds from across the globe.

Dispatches
Insulin Pills Could Change Everything for Diabetics
insulin pills
Dispatches
Insulin Pills Could Change Everything for Diabetics
A pill instead of a needle would be the "holy grail" for diabetes treatment.

A pill instead of a needle would be the "holy grail" for diabetes treatment.

The New Space Race
Why This Startup Believes 3D Printing in Space Will Be a Game Changer
Why This Startup Believes 3D Printing in Space Will Be a Game Changer
The New Space Race
Why This Startup Believes 3D Printing in Space Will Be a Game Changer
Sending things into space is really expensive. But what if we didn't have to? What if everything in space was made...
By Mike Riggs

Sending things into space is really expensive. But what if we didn't have to? What if everything in space was made in space?

The New Space Race
Four Flights a Day. Five Days a Week.
Four Flights a Day. Five Days a Week.
Watch Now
The New Space Race
Four Flights a Day. Five Days a Week.
At XCOR, the dream of taking regular commercial flights to space is alive and well.
Watch Now

At its peak, NASA’s shuttle flew to space a few times a year. XCOR wants to be something more like Southwest Airlines for space. They're working on a spacecraft prototype with a very ambitious goal: four daily flights to space, five days a week. If XCOR is successful, they could take more people to space in six months than NASA did in 30 years.

Superhuman
Is the Miracle Medicine of the Future About to Become the Totally Real Medicine of...
Is the Miracle Medicine of the Future About to Become the Totally Real Medicine of the Present?
Superhuman
Is the Miracle Medicine of the Future About to Become the Totally Real Medicine of...
Gene therapy uses a virus to replace missing or defective genes. It sounds counterintuitive, but it could be the...
By Mike Riggs

Gene therapy uses a virus to replace missing or defective genes. It sounds counterintuitive, but it could be the key to curing previously incurable diseases.