Dr. Mingqi, the Pacific Base of the Interstellar Exploration Alliance, is nearly 90 years old this year, the most prestigious life scientist of the entire IA organization. If it were someone else, the 90-year-old grade might have already begun to live a long life. However, Dr. Mingqi is an absolute science madman. To this day, he still insists on scientific research and is still at the peak of science at the age of 90.

When Nai Chen met Dr. Mingqi again, he was still wearing a white coat and thick round-edged glasses. His white hair surrounds the Mediterranean bald head. He looked funny and friendly, and exuded a unique charm from the inside out.

"Hello, Dr. Mingqi!"

Yuan Shichen greeted. Yuan Shichen has always admired Dr. Mingqi, the science predecessor.

"Long time no see, Mr. Wei Chen."

As he grew older, Dr. Mingqi's already low voice became deeper and deeper.

"You are still so energetic!" Yuan Shichen praised.

"Huohuo" Dr. Mingqi laughed happily, "I am already an old man, why are you talking about being full of energy?"

"You are so serious." Yuan Shichen said softly.

"Birth, old age, sickness and death, when the time comes, it will be done. This is the law of nature and human nature. As a life scientist, I am still very open-minded." Dr. Mingqi said lightly, "The only regret is that he cannot untie the secrets in you!"

"This is really a pity." Yuan Shichen said slowly.

"Huohuohuo, I thought I could figure out the secret of your old face in my lifetime, but it seemed that I couldn't do it." Dr. Mingqi sighed and continued, "Let's take a look at these samples."

"good!"

Yuan Shichen didn't say much, and put on a white coat. After various disinfection, he followed Dr. Mingqi into a dark and fully enclosed laboratory, where constant temperature cultivation systems were everywhere.

"Over the past decade, I have cultivated your tissue cells from generation to generation, and conducted experimental research from different angles, and finally found a little clue."

Dr. Mingqi began to showcase his experimental data.

"A few years ago, I separated the DNA (chromosomes) in your tissue cells separately, introduced them into other people's enucleation (dna-free) cells, and then cultured them. Guess what the result is." Dr. Mingqi kept a secret with a smile.

"How? Are you trying to clone me?" Yuan Shichen smiled and threw the question back.

"Haohuo~" Dr. Mingqi smiled and shook his head, "If there are 50 generations, all these cells will die."

"Oh, I've returned to normal human level again." said Harashi Chen.

"Yes, the reason why you keep your youth has nothing to do with the genetic material itself, or it is not the main factor." Dr. Mingqi inferred with a serious expression.

"Does it come from the tissue cells themselves?" Yuan Shichen asked, "but this is not very reasonable."

"Indeed, the root cause is not the tissue cells themselves. I guess it is external forces that changed all this." Dr. Mingqi added.

"External force? What kind of external force?"

Many possibilities emerged in Yuan Shichen's mind.

"The microscopic world of life is as great as the macroscopic world of the universe!" Dr. Mingqi said meaningfully, "What is the chemical nature of biological matter? How do these chemicals transform into each other in the body and show the characteristics of life? What are the composition and structure of biological macromolecules? How do cells work? How do genes work as genetic material? What mechanisms promote cell replication? How does a fertilized egg cell use its genetic information in the strange process of developing into a highly differentiated multicellular organism composed of many extremely different types of cells? How do multiple types of cells combine to form organs and tissues?"

Dr. Mingqi raised a series of profound questions with great emotion.

"Science is great, life is amazing!"

Yuan Shichen smiled and said Dr. Mingqi's catchphrase.

"I think there is a mysterious external force that we cannot understand for the time being, which activates the original excellent gene fragments in your DNA genetic information." Dr. Mingqi continued.

"The original excellent gene fragment?" Yuan Shichen asked in surprise.

"In the last century, the structure of DNA double helix was elucidated, creating a new era of science and technology, and opening a new chapter in life sciences. Subsequently, the central law of genetic information transmission, genes and gene expression regulation were successively recognized. From then on, we realized that the things that master the fate of most living things are DNA and the genes it contains."

"However, the genetic information contained in human chromosomes is extremely huge. At present, the biological community can determine that human genetic information is about 000 (many lower organisms are more than humans, such as 100,000 poplar trees, and even roundworms are similar to humans, which is too harmful to self-esteem.), which only accounts for less than 10% of the total length of the DNA sequence. Is the vast majority of the remaining garbage? I don't think so, many mysteries of human life may be hidden in these seemingly garbage." Dr. Mingqi continued with certainty, "So, there are many good or bad unknown gene fragments in our genetic material that are not directly reflected."

Yuan Shichen also knows some related knowledge.

Although the source of some "garbage" in human DNA can be explained, for example, the DNA from other invading viruses is embedded in human DNA under a special mechanism, but it is no longer active and has no effect. In addition, there are also some organs lost during evolution, such as humans without tails, but the genes of long tails still exist in human DNA.

However, Yuan Shichen would not think that these unrevealed DNA information is completely useless. Instead of calling them garbage, Yuan Shichen would rather call them dark matter in DNA (90% of these unknown DNA information are repeating sequences, and the repeating sequences are different).

"Qingchenjun, do you still remember telomerase?" asked Dr. Mingqi.

"Remember!" Harashi Chen replied, "Teleomerase produced in cancer cells and germ cells can repair the damage that occurs at the end of the chromosome during cell division, so that the wound can be blunted. After each division, telomeres can be reconstructed, thus avoiding the tendency of telomeres to disappear during cell division."

"Yes, the gene that produces telomerase exists in all tissue cells in the human body, but why is it only expressed in cancer cells and germ cells? What is the reason behind this?" Dr. Mingqi widened his eyes and looked at Yuan Shichen and asked.

"Please give me advice!" Of course, Yuan Shichen didn't know the answer.

"Teacher!" Dr. Mingqi was stunned and waved his hand quickly and said, "I can't give advice, I can't give advice! This is the ultimate problem that troubles me. I will die in the morning and hear the truth! If I know the answer, I will have no regrets in my life."

"So, is it the mysterious power you mentioned before that activates these sleeping genes?" Yuan Shichen asked back.
Chapter completed!