According to the report, recently, a scientific research team from the Chinese Academy of Sciences, when studying a fossil of a tail feather dragon, extracted some cells from it, and suspected the existence of DNA in it, which means that although the last dinosaur was 65 million years ago, there is still a chance to extract organic matter from the bones of dinosaurs that are not completely petrified, helping us better study them.
<h1 class="pgc-h-arrow-right" data-track="2" >how did scientists discover dinosaur DNA? </h1>
I have to say that this is really a great discovery, this found cartilage cells of the tail feather dragon, from 125 million years ago, it was found in the western Liaoning region of China, the fossil is very well preserved, in the chondrocytes, scientists found filamentous chromatin.
What is chromatin? This is related to the existence of genetic material, is a linear composite structure, it is composed of DNA, histone, non-histone and a small amount of RNA, for organisms, chromatin is mainly used to store DNA information, naturally, found on the fossil of this tail feather dragon, which means that it is very likely to extract DNA.
And what is even more exciting is that the chondrocytes extracted from the fossils of the tail feather dragon this time are still not completely apoptosis, still have a certain degree of activity of the chondrocytes, and its nucleus is also very complete, although at present, it is not possible to confirm whether dna will really be extracted, but for humans, it is undoubtedly a major discovery.
However, what is unexpected is that this discovery is in fact highly questioned in the world, and it can even be said that since the early 90s of the last century, after The first time Chinese scientists were suspected of discovering gene fragments on dinosaur fossils, it has not been recognized internationally.
<h1 class="pgc-h-arrow-right" data-track="21" > so why are the major discoveries of Chinese scientists not recognized? </h1>
More than 20 years ago, Chinese scientists extracted a valuable genetic fragment from a 65 million-year-old dinosaur egg from the end of the Cretaceous period, which is also the first time that humans have discovered the genetic material of dinosaurs, but this discovery has not been recognized.
Friends may say that the cells extracted from the mammoth's body are now intended to "resurrect" the mammoth through cloning, so why are they also prehistoric creatures, extinct species on the earth, why is the DNA found in the mammoth recognized, and the genetic material found in the dinosaur is denied?
Is it aimed at our scientists? In fact, this is not the case, because internationally, existing scientific research believes that DNA is extremely difficult to preserve, and after a lot of data analysis, it has been found that if an animal dies more than 6.8 million years, then it is impossible to obtain its DNA.
That's because nearly half of the DNA in the body has been broken down 500 years after the animal's death, and even through the most advanced scientific research methods, more than 23 million years old biological fossils are simply unable to obtain DNA.
Therefore, not to mention the tail feather dragon 120 million years ago, that is, the dinosaurs 65 million years ago, it is impossible to extract DNA from their fossils, naturally, Chinese scientists have repeatedly said that they have extracted the DNA of dinosaurs, and the international community will always question it.
For example, in April last year, a scientific research team of the Chinese Academy of Sciences also said that traces of DNA were found from a fossil of a Crown dragon about 70 million years old, because its fossils are well preserved, and there are primitive proteins and chondrocytes on the fossils.
Of course, coincidentally, in the same period last year, a scientific research team in the United States was also suspected of finding traces of DNA on the fossil of a sharphornosaur about 70 million thoughts ago, but through further research, it was found that there is a microbiota on this fossil, so the so-called dinosaur DNA may also be the DNA of microorganisms on the fossil.
This discovery has also made it internationally believe that even if DNA is really found on dinosaur fossils, it is difficult to confirm whether DNA is the dinosaur itself, because if the fossil has been contaminated with microorganisms, it is very likely to be confused, which leads us to draw wrong conclusions.
<h1 class="pgc-h-arrow-right" data-track="22" > so, will the dinosaur find DNA? </h1>
Of course, there is a voice of doubt and support, from the development of human paleonomolecularism, there are still many deficiencies in our research, which also leads to us may really find the DNA of dinosaurs, but because it cannot be confirmed, it leads to missing out with the truth.
Of course, science itself is a rigorous process of exploration, questioning, and curiosity, and with the development of the future, it is also possible to actually find DNA fragments in dinosaurs.
However, you don't have to worry about Jurassic World reappearing on Earth, because because it is so old, it is unlikely to find a complete dinosaur DNA fragment, and the broken DNA cannot be cloned, not to mention that the international community will not allow this, so it is still from a scientific point of view to seek answers, and nothing else to worry about.