In the evening, Duan Pingsi was still very excited when he returned to the dormitory, humming a song while washing his feet, and his roommates said that his nerves were getting more and more abnormal, and suggested that he go to the school hospital to see a psychiatrist.

When he was excited and inadvertently looked at the wall clock, he found that the time on it was 12:12 again, could it be that the time and space of this world were really out of order? His heart was shocked.

"Did you notice that every day when I go back to my dorm, the clock says 12:12?" Duan Pingsi pointed to the wall clock and asked his roommates, hoping that they could help solve their doubts.

"Don't tease us, you come back with your watch every day, can it not be 12:12?!" Yang Pengyu thought that Duan Pingsi must have come back at this point on purpose.

"I know you're working hard, and I know you're going to go back to graduate school next year, but you're also too much of a blow to our brothers' confidence, right?"

Ren Jielin felt that Duan Pingsi was showing off his hard work, and deliberately told them that he was the only one who was studying hard, so he would come back so late every day, and the others were playing games in the dormitory all day long, and they didn't want to go out at all.

"What's the matter? I just see 12:12 every day, that's why I want to ask you, but you don't ...... Alas! ”

Duan Pingsi felt that he was really unable to communicate with these people, and his kindness was always regarded as malicious speculation by them, obviously he was living the belly of a gentleman with the heart of a villain.

Fortunately, there is a "detective expert" Zhao Zhuo, he analyzed: "When you pay special attention to a thing, you will often get relevant information about this matter, just as you will often see annoying people wandering around in front of you, this is called the law of attraction, there is a scientific explanation, because you often think about the number 12, so when you see 12, you will pay more attention to it, over time, you will feel that it always appears in front of you." In fact, you have to look at the time at least a dozen times a day, but the only thing you notice is 12:12. ”

"Maybe, I don't know if I pay more attention to the number 12, but I see it unintentionally every time, and I don't deliberately look at what time it is at the moment."

Although he can't fully explain his doubts, Duan Pingsi still feels that this law of attraction is still a bit interesting, but to completely solve the mystery of "12:12", it is estimated that he will have to find time to consult Professor A or his ancestor.

At 8:10 the next day, Duan Pingsi had already appeared in Professor A's laboratory, which was the time for students to attend class, and he deliberately got up early, hoping to make a good impression on Professor A.

"You can find a place to sit first, or go have an early meal and come back, I'll have to keep busy!"

Professor A was tinkering with some large analytical instruments, and he expressed instant surprise at Duan Pingsi's arrival so early, maybe the previous students were lazy!

"I've already eaten early, if there's anything you can do to help, just call me!"

It is difficult to come into contact with such sophisticated instruments at the undergraduate level, Duan Ping thinks about knowing more about them, and it would be great if he could learn to operate and use them, because he likes to go and watch when he sees someone using them.

"Alright! Then help me get some distilled water, add it to the thick centrifuge tubes, close the lid, and put it in the largest centrifuge next to it. As he spoke, Professor Ah was still looking down and preparing some pungent smelling liquid.

When Duan Pingsi did everything according to the requirements, Professor A explained to him: "This is the basic method of extracting the DNA of animal genetic material, and we will do a gel electrophoresis later to know whether the extraction is successful." ”

"What's the use of extracting it? Oh! I'm talking about what's going to happen next? ”

Duan Pingsi continues to show his love of learning and thinking, he likes to break the casserole and ask questions to the end, not letting go of any suspicious questions.

"If the extraction is successful, the next step is to sequence it, and after sequencing, we can compare it with the DNA sequence of a known species, so that we can determine what kind of DNA we are extracting. DNA sequence alignment is currently the most effective method for species identification, but it is also the most expensive. There are still many applications of this method in reality, such as paternity testing, hehe, those who don't know who the child's father is can use this method to find the biological father! ”

In response to Duan Pingsi's question, Professor A not only did not feel troublesome, but explained the ins and outs to him professionally and humorously. This made Duan Pingsi feel that it was much more useful than what he had learned in the first three years of his undergraduate studies.

"We made it!"

An hour later, Duan Pingsi exclaimed excitedly, the gel that had undergone electrophoresis showed white bands under the irradiation of the ultraviolet lamp, and Professor A told him that the white shining things were DNA.

"What a great substance this is!"

Duan Pingsi felt the magic of DNA, it was those bright white bands that controlled this colorful world, without which life would no longer reproduce.

When he asked where the DNA came from, Professor Ah led him to a large freezer and took out a foam box from it.

"Open it up and take a look, but watch your little heart and don't be scared by it!"

Under Professor A's reminder, Duan Pingsi carefully opened the white foam box, and the first thing that caught his eye was a spherical object wrapped in a black sealed bag.

Opening the seal of the black bag, a spherical thing stained with blood stains appeared in front of him, Duan Pingsi suddenly felt dizzy and nauseous, and now he could conclude that it was an animal head, which was neatly cut from the top of the neck, and the top of the head and face were blurred by the sharp blade, and its original appearance could not be seen, and a lot of blood was shed when the head was cut off, and the blood stains were already a little dark and faint at this time, but it was still shocking.

"What kind of animal's head is this? How could the person who killed it be so cruel? ”

Duan Pingsi endured to keep himself from being too uncomfortable, and at the same time made a strong protest against the behavior of the "butcher", if the law allowed such a punishment, then he thought of the trick of "giving back to the other in the other way".

"It's probably an ape, which one is still waiting for the results of DNA sequencing, this guy was brought back from the Jade Dragon Snow Mountain by the five of us desperately, hoping it can bring surprises."

Professor A talked lightly about the origin of this head, but Duan Pingsi suddenly remembered the major accident that happened in the Jade Dragon Snow Mountain not long ago, and the news reported that 88 field scholars died there. In this way, this head is indeed not easy to come by!

"From the analysis of the environment at the time, it should have died from an avalanche, not man-made, but it is difficult for an avalanche to cause such a neat incision, so the cause of its death needs more evidence to be determined."