readx;? Xu Anqing listened more seriously. Pen "Fun" Pavilion www.biquge.info

After walking a little further, he rushed to Professor Xie Gaoyi and asked softly, "What do you need to do to discover a new species?"

Xie Gaoyi obviously not met such a student for the first time, but he was willing to explain to him, and then saw that the students around him were listening with their ears pricked up, so he simply raised his voice and said with a smile: "Discovering a new species is not a simple matter. As you know, the eighteenth and nineteenth centuries were the century of naturalists, the golden age, and there were too many new species. It was also written at that time. At that time, there were even small islands that no one had set foot on, and as long as you walked up, you could do the naming work for a few years. ”

Speaking of this, Xie Gaoyi himself first looked leisurely for a few seconds before continuing: "Not now." Now, like the Badaling forest area where we are currently located, it is like being scraped by a comb I don't know how many times, and it is not impossible for new species to appear, and the probability is very low. ”

Xie Gaoyi really didn't dare to say it all the time, the Badaling forest area is indeed the main education area of the botany departments of several universities in Beijing, and countless experts and professors have passed by and investigated, but so what? Historically, the stories of new species discovered in the school teaching area have been heard endlessly, and some universities have even seen this situation two or three times. The complexity of plants determines this characteristic of plants.

Compared with the botanical major, Xie Gaoyi, who grew up listening to naturalist stories, the students felt less empathy, and just quietly surrounded Xie Gaoyi, waiting for him to talk about the meat part.

Xie Gaoyi was immersed for a while, and then said: "If students are interested in plant taxonomy, study the classification of plants, discover new plant species, and understand the knowledge of new plant species, it is called plant taxonomy. If you want to stop there, the first thing you need to do is to observe the plants, analyze the plants, and preferably find the direction of a taxon. Do you know what a natural taxa is?"

The students shook their heads one after another, and some people silently recited the genus and species of the Sect Compendium, but they did not find out the concept of a group.

Xie Gaoyi smiled: "Taxa are taxa, and we now talk about natural taxa, to see what kind of taxa a species is, to see if it has the same evolutionary source as the species of the same group." ”

The students nodded as if they didn't understand.

Xie Gaoyi came to class today, so he said again: "Let me give you an example." Ferns are a taxon, they have the same commonalities, for example, sporophytes, sporophytes, mature sporangia groups, and short-lived gametophytes, and if these are determined, we can basically determine whether a new plant is in the group of ferns or in the group of non-ferns. However, it is not an easy task to do this. ”

Xie Gaoyi took a deep breath and said, "I have done research for more than 20 years, and now I dare to say that there are only a few taxa that I am familiar with. Let's put it this way, if you start today, know a few species every day, and in a few years, get acquainted with one or two taxa, and then do field research according to different taxa, you will be able to target. ”

Xu Anqing and the classmates around him all nodded slightly.

"It's been a painstaking process. Xie Gaoyi sighed with emotion and said: "Standing here today, I have to pour a little cold water on my classmates, and now, the species you have found, after identification, nine out of nine results are ...... Oh, that's what the book says. ”

The students couldn't help but laugh.

Xie Gaoyi also smiled and said, "You guys are still laughing now, but when you encounter this kind of thing, you won't be able to laugh anymore." Think about it, if you finally find a new species, and you are sure that you have never seen it, then you have to make a good record, check and search, and if you have to borrow specimens from our school, compare the plants of the same group or adjacent groups, and finally find that it is all done in vain.

The students simulated the route Xie Gaoyi said in their hearts, and they were all related.

Xu Anqing's heart trembled twice, and said, "In this way, you have to memorize the form of the plant?"

"That's right. What, do you find it difficult?"

Xu Anqing nodded obediently and said, "I always feel that it is not easy to remember." ”

"It's no harder than English. Xie Gaoyi laughed twice, and said: "Now the technology is also getting better, let's just say that the identification of which group is this kind of thing, we used to engage in taxonomy, that is to be busy with too much work, now, I want to thank our Yang Ruiyang." ”

The whole class was stunned for two seconds inexplicably, and suddenly looked back at Yang Rui.

Although Yang Rui didn't know why, he still stood still with a smile and kept smiling.

Xu Anqing couldn't laugh a little, can God the fuck tell me what happened?

Xie Gaoyi didn't let everyone wait too long, and quickly uncovered the mystery, and said: "We can now identify the taxa, through the PCR method invented by Yang Rui, simply put, don't we want to test whether the species is homologous? ”

Xie Gaoyi pulled Yang Rui very high, and the students who listened were stunned.

To say that in the school, Yang Rui's news and news have never been interrupted, and everyone knows that Yang Rui is extremely powerful, but Professor Xie's evaluation is still staggering.

Today's students are not as familiar with all kinds of politicized examination language as they will in the future, and they can't help but be shocked to hear Professor Xie say to his face that the trend of biology depends on Yang Rui's pioneering invention.

This is mainly because Xie Gaoyi is not a teacher majoring in biology, and Yang Rui's teacher in this major will not pull Yang Rui too high for various considerations. Xie Gaoyi doesn't care, in fact, he still lowered some evaluations, or rather, he has not yet realized the greater value of PCR, otherwise, the Nobel Prize-level technology will only get a pioneering evaluation.

Yang Rui also accepted Xie Gaoyi's evaluation without shame, and PCR deserves this evaluation. As far as personal contributions to the world are concerned, making the first version of the PCR machine ahead of schedule has accelerated modern science.

This is the only thing that may not make much difference in three or five years, but after ten years, the number of patients who can be better treated as a result of this is not something that can be described by thousands.

Yang Rui's high-spirited and smiling, the excited Xu Anqing's face was red, but his body was cold, as if the military coat had no effect at all.

Xu Anqing thought of his father.

He was thinking that even his own father probably couldn't get a better evaluation from a person like Professor Xie.

In such a comparison, Xu Anqing felt even more powerless and depressed.

"Ahead is the main forest area. Professor Xie led the team and continued to move forward, the road under his feet was slightly slippery and rugged, which made people have to restrain their minds.

Professor Xie did not lead the team into the main forest area, although it is the teaching forest area where the capital is located, but the forest area is a forest area after all, and there are always countless dangers. If it is a botanical student who has conducted field surveys many times, or a research institute researcher who has done plant research for many years, he may lead a team to go deeper, and for biology students who have conducted field surveys for the first time, perhaps the only time, there is no need to go deep into the dense forest.

Walking around the wooded area is already very difficult.

The dirt roads in the wooded area are crisscrossed and appear to be even more intermittent from afar, either destroyed by overgrown weeds or covered with white snow, and the uneven roads are even more physically demanding, even for students who often do manual work.

The inevitable uphill and downhill slopes are even more dangerous, even if there is no moss in the wooded area, the stones are made wet and slippery by the dew and thin snow, and in some sections, the students fall down one by one, and the latter looks at the front of the action clumsily, but when it is their turn, they have to lie down awkwardly.

When Professor Xie talked about the name of the plant again, the students could only look up weakly, and none of them took notes, and the action of taking notes and putting them in the notes could make people cry out tiredly.

Yang Rui also began to feel physically exhausted, only to feel that the bag on his body was getting heavier and heavier, but his spirit was very good, because he began to slowly match the road he had traveled with the map in his mind.

"Professor Xie, let's go south. There is a little less snow in the south. Yang Rui was at the fork in the road and began to give advice.

Professor Xie didn't have any opinions, so he adjusted the direction according to Yang Rui's opinion.

After walking for a while, Yang Rui said again: "Professor Xie, let's climb the hill over there, and it will be warmer." ”

"You lead the way. "Professor Xie doesn't know what Yang Rui means, but face is to be given.

After doing this three times, Xu Anqing felt uncomfortable.

"When I was praised twice, I pretended to be a wolf with a big tail. Classmate Zuo Liyan, thinking about Xu Anqing's mood, commented.

College classmates have all kinds of relationships, Zuo Liyan lives in Xu Anqing's upper bunk, and always likes to run with him, which also forms a wonderful dog-legged symbiotic relationship.

After two years of getting along, Xu Anqing is like the queen mother can't do without Xiao Lizi, and she can't do without Zuo Liyan.

Zuo Liyan's words were in line with Xu Anqing's thoughts, he laughed twice, took a breath of cold forest air, smiled, and said, "Let him be a tribe and have the ability to discover a new species." ”

"He didn't recognize it even if he discovered a new species. I get angry when I see him like that, what are you walking around, you can't listen to the teacher's command. Zuo Liyan himself has a lot of grievances.

"If he loves to command, let him command. People may just want to release a big satellite, and in Badaling, Beijing, they will discover a new species that no one has ever seen. Xu Anqing said and laughed.

Zuo Liyan is also a hey, hey, hey

Some classmates around the two heard it, and although they didn't go along with it, they also felt a little funny.

Indeed, there are green and white forests on the left and right, and it is not a place to walk, and it is even more tiring to deliberately climb a hill.

At the end of the team, there was laughter, but the front of the team was walking slower and slower, and Professor Xie shouted in front of him: "Yang Rui, don't go far." ”

"I think this plant is a little strange, I'll pick a specimen, Professor Xie, can you help me take a look?" Yang Rui's voice came from the empty forest, arousing the curiosity of the students.

……