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Jurassic Era Do You Know How To Make Animatronic Dinosaurs?

Why Can't We Copy Dinosaurs?

Nov. 22, 2019

It is often reported that archaeologists have discovered the fossils of certain organisms and have extracted the DNA of such organisms.


This is really good news, because nowadays biotechnology is more and more developed, and humans have been able to use the animal's skin cells to replicate the animal. If according to the current development trend of biotechnology, can scientists use the DNA of some animal to copy this animal? If the scientist extracts the DNA of the dinosaur, it is a matter of time to copy the dinosaur? If humans can The tall, horrible Dinosaur Skeleton of ancient times was copied, and it might be possible to create a Jurassic Park.



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Some scientists have thought about this. Perhaps many people think that this idea is likely to be realized in the near future, but the actual situation is beyond everyone's expectations, because scientists can't extract complete DNA from dinosaur fossils! Scientists have long been It was found that after the animal died, the DNA in the cell began to be broken down by the enzyme of the cell itself and was also decomposed by other microorganisms. This is not good news for us.


So how fast is this decomposition speed, that is, how long the DNA can be stored after the animal dies, and scientists have never counted it.


Not long ago, scientists at the University of Copenhagen in Denmark conducted an in-depth study of this issue. It is found that DNA is decomposed very quickly, but it does not rot quickly like flesh cells. Studies have found that DNA decomposition has a half-life! The nucleotides that make up the DNA are disconnected. It is gradually decomposed like the unstable radioactive elements.


They studied 158 pieces of terror bird leg bones, which belonged to three types of terror birds. They were buried between 600 and 8000 years underground, and the land points were less than 5 kilometers apart. Therefore, it can be considered that the preservation environment of the bones is identical. Scientists isolated DNA from these leg bones and examined the extent to which DNA was broken down. It was found that the local underground temperature was 13.1 ° C, and the half-life of DNA decomposition under this temperature environment was 521 years, that is, after 521 years, half of the nucleotides of the DNA chain were disconnected from each other. After 521 years, the remaining half of the nucleotides that are still connected will be disconnected halfway. This will continue. After about 1.5 million years, the shadow of DNA will not be found in the bones. A short DNA fragment consisting of several nucleotides.


This half-life of DNA is said to be a certain place, that is, the animal does not move after being buried in the ground, and the surrounding environment does not change, and the DNA in the body will be decomposed with a fixed half-life. However, the decomposition of DNA is affected by many factors such as temperature, humidity, and whether there are microorganisms. The higher the temperature, the faster the decomposition speed, especially the presence of water will greatly accelerate the decomposition rate of DNA. The different burial sites, the environmental conditions will not be the same, so the rate of DNA decomposition will be different, then the DNA half-life is also significantly different.


But even in the ideal environment where the environment is dry at a temperature of minus 5 ° C, the DNA is completely destroyed after 6.8 million years. We know that dinosaurs lived 60 million years ago. Obviously, the DNA of dinosaurs cannot be preserved until now. Even if they try to find them, they can only find some fragments containing several nucleotides. This is impossible to guide scientists. To copy the dinosaur It can be seen that the idea of building Jurassic Park can only exist in the movie, or we can watch the Museum Dinosaur Skeleton.

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