Using artificial womb technology, with enough resources and energy, and the collected oogonia and spermatogonia, it is really feasible to increase the population without limit.
As long as oogonia and spermatogonia continue to proliferate, egg cells and sperm can be obtained continuously.
The most important thing is that the genetic material of eggs and sperm obtained in this way is the same as that obtained through natural reproduction.
Their genetic material is relatively different.
"Okay! This method is better." Zuo Dajun said with a smile, "The method of using oogonia and spermatogonia is better than the method of using egg cells and sperm. Look at what we have in front of us. Just these, we can do it in a short time." A large number of cattle eggs and sperm can be obtained in a short period of time.”
Oogonia and spermatogonia are collected from cattle, proliferated through culture, and then differentiated into eggs and sperm.
Fan Xiaoming nodded, "Yes! The area we are in now will provide enough cow eggs and sperm. As for the division of oogonia and spermatogonia into eggs and sperm, we can watch it through simulation or directly."
Zuo Dajun smiled, pointed at the two culture devices not far in front of him and said, "I want to observe these two. I pointed out correctly! One of these two is an egg cell culture device and the other is a sperm culture device."
"That's right, that's right." Fan Xiaoming smiled.
At this time, a robot flew over carrying two small devices.
After the robot came over, it installed the small device it brought on the two training devices Zuo Dajun pointed to.
With the equipment ready, Fan Xiaoming waved his big hand in front of several people, and two pictures appeared in front of them.
Appearing in the picture are oogonia and spermatogonia being cultured.
Seeing this, Zuo Dajun said: "It's not intuitive enough to see it this way. Can we go into the virtual universe and see it? That way it can be more intuitive."
Seeing it this way is not much different from seeing it on the screen in the past. Although the three-dimensional effect is better, compared with the virtual universe, this way is still much worse.
Fan Xiaoming shook his head, smiled and said: "We are conducting direct observation. There is no need to enter the virtual universe, but we can still achieve the results you want. Don't forget our virtual reality."
As he spoke, the environment around Su Zhe and the other five people began to change. The culture equipment around them began to fade. What the five people were looking at became the oogonia being cultured.
This scene is like Su Zhe and the other five people shrinking and appearing in the culture medium of oogonia.
The five people looked at the large number of oogonia in front of them. Many of these oogonia were in the process of dividing.
Some have just broken up, some are in the middle stage, and some are about to complete the split.
Careful observation can also reveal that there is material moving around these oogonia.
Seeing this, Zuo Dajun was a little excited, "This is the division of oogonia, or the proliferation process of oogonia. Compared with before, it is much more convenient to learn these now. You can watch the real process directly, and what is the text conveying it?" The information wasn’t as direct as it is now.”
With Fan Xiaoming's control, the oogonia seen by several people were also constantly changing.
"How can it be compared with the present? In the past, when it came to oogonia, it was nothing but imagination. Now you can see it directly in front of you. Even every detail of the oogonia can be seen clearly. Who told us to detect it now? Strong ability." Fan Xiaoming said.
Bao Qizheng nodded and said: "You don't know that teaching now is just like exploring. Just like the oogonia we see now, we can use the brain-computer to enter the virtual universe to explore the oogonia bit by bit. Its origin, structure, function, etc. are all better than those imagined in the past."
"That's right!" Zuo Dajun said, "Not to mention the brain computer, the game cabin that is about to be eliminated is also very strong, and the current brain computer is even more incredible. It's so easy to learn it, don't talk about it, what nonsense ideas Everything can be verified quickly. As long as you are not a fool, you can learn whatever you want, and that’s it now. There was no such condition in the past.”
"There's no comparison, okay!" Fan Xiaoming explained with a smile, "Now we see some oogonia that do not participate in proliferation. These oogonia will be gathered together into the egg cell culture area, which is oogonia differentiation. Oocyte."
What several people saw changed again.
There are many dividing oogonia here, but after dividing, these oogonia are no longer two oogonia, but become two egg cells.
To talk about the difference, the previous division was the proliferation of oogonia, which is actually the replication of oogonia. The two oogonia after division are basically the same as the previous oogonia. Of course, during proliferation and division It is possible for errors to occur during the process, but the probability is extremely small.
In such proliferation and division, the genetic material and cell tissue structure are basically the same.
What a few people see now is different.
To be precise, one oogonia differentiates into two egg cells, and each of the two egg cells contains half of the genetic material of the oogonia.
Zuo Dajun nodded and said: "These differentiated egg cells will then enter the next step, which is that the egg cells will receive sperm."
"Yes!" Fan Xiaoming said with a smile, "Let's look at the proliferation and differentiation of spermatogonia. In fact, they are the same as the proliferation and differentiation of oogonia."
Speaking of which, the proliferation processes of spermatogonia and oogonia are really similar. The only difference is differentiation.
Zuo Dajun saw the sperm differentiated from spermatogonia at the end and said: "The whole process is almost the same, but the sizes of egg cells and sperm are a bit large... By the way, since we can proliferate oogonia and spermatogonia, why don't we Directly multiplying egg cells and sperm would not be simpler, but there would still be many unnecessary steps."
Hearing what Zuo Dajun said, Su Zhe and others were a little helpless. Everyone knew Zuo Dajun's educational background, so they didn't show too many expressions.
Bao Qizheng smiled and explained: "It is really feasible to directly copy egg cells and sperm with current technology, but this is a bit contrary to nature. The most critical issue is the diversity of egg cells and sperm. Directly copying egg cells and sperm Sperm cannot guarantee the diversity of genetic material. You don’t want all these cows to be the same. If you copy egg cells and sperm and maintain the diversity of their genetic material, it is technically possible, but there is no such thing as now. The method is convenient, it’s like there is a path that already exists, but you refuse to follow it and insist on opening a new path, there is no need to make it difficult for yourself.”
While Bao Qi was explaining, several people exited the virtual reality, and led by the commentator to the next area, the blastocyst area.
This area is where the egg cell and sperm combine to form a fertilized egg, which divides to form a blastocyst.
Listening to what Bao Qi said, Zuo Dajun nodded repeatedly, "Understood, the process we are taking now is the same as what happened originally. Oogonia and spermatogonia will proliferate and divide in the human body, and egg cells and Sperm will not be like this in the natural environment. Even if we use technical means to achieve it, we still have to solve the problem of the diversity of genetic materials of egg cells and sperm. Even if we still use technical means to achieve it, it will be much more troublesome. The straight road should not take detours. No one with a normal mind would do this...Well, how do oogonia and spermatogonia ensure the diversity of genetic material when they differentiate into egg cells and sperm? Isn't it a general division?"
Fan Xiaoming smiled awkwardly and said, "This is a knowledge point about high school biology. Let the commentator explain it to you."
With that said, Fan Xiaoming waved his hand, and the commentator started to explain Zuo Dajun one-on-one.
The scenes that Zuo Dajun could see could not be seen by Su Zhe and others.
By the time a few people arrived at the blastocyst area, the commentator had finished tutoring Zuo Dajun.
Zuo Dajun said with a smile: "The current teaching method is better. You can watch the process directly. Even a fool can understand it. Unlike in the past, the teacher was on the podium and we imagined under the podium. To be honest, as long as we talk to the teacher There is such a slight deviation in my understanding, it is really difficult to imagine the scene described by the teacher."
Fan Xiaoming nodded and said: "Using words to describe the scene is somewhat inadequate. No matter how good the description is, it is not as good as seeing it directly."
"That is, that is." Zuo Dajun smiled, "What we are in now is the blastocyst area. Is it the process of in vitro fertilization in the past, that is, the egg cell and sperm combine to form a fertilized egg, and the fertilized egg divides to form a blastocyst. The process culminates in the transplantation of the blastocyst into the endometrium.”
Fan Xiaoming looked at Zuo Dajun strangely, and said with a smile: "Shout! Dajun still knows this, you shouldn't."
Su Zhe and others also looked at Zuo Dajun.
Zuo Dajun smiled unconsciously and said, "Well, what I saw in a magazine when I was free in the past was an advertisement for in vitro fertilization made by the hospital. It described the process."
"Okay!" Fan Xiaoming said with a smile.
There are many test tube-like devices in the blastocyst area, and the number is extremely large.
Zuo Dajun stared at a device and said: "Not to mention, you can see some things with the naked eye. The larger ones are blastocysts, or cell clusters. Identical twins are produced through this process. Yes, that is, the cell mass is divided into two, and the genetic material of the two people will naturally be the same."
"Yes!" Fan Xiaoming nodded, "We still observe in the same way."
After Fan Xiaoming finished speaking, a robot flew over with a small device, which was quickly installed on the test tube-like device.
With a wave of his hand, the environment in front of them changed.
There were many eggs and sperm appearing in front of them, and there were many sperm swimming around each egg cell.
Seeing this scene, Zuo Dajun said: "After a sperm enters the egg cell, the egg cell will close the entry channel. From my perspective, this cell is an extremely sophisticated machine."
"Well! It's like this under normal circumstances." Fan Xiaoming said, "Let's continue to look. What we see now are fertilized eggs that have been successfully fertilized. In this process, the genetic material of the egg cells and sperm will be combined together. After that, It’s the division of the fertilized egg.”
The fertilized eggs that several people saw were already in the process of dividing.
As the picture changes, two cell clusters, four cell clusters, eight...
Zuo Dajun said with a smile: "The cells at this time are early embryonic cells and have totipotency. The cells at this stage can develop into complete individuals when cultured independently. Do we have to sit still on this process? This will increase the number of individuals. Faster.”
Fan Xiaoming nodded and said: "Yes, the cells in this period are totipotent, but the individuals cultured in this way are all the same. What we need is diversity. Twins, triplets, even decuplets are easy to talk about. We If you do this, one million babies can be born. Think about what it will be like. Such a situation is not a good thing for the entire group."
"This, too." Zuo Dajun nodded.
Bao Qizheng explained: "This method is rarely used on animals, but it is very common on plants. Similarly, the harm caused is also very scary. Once any virus infection occurs, it will affect the whole area. , for the safety of the group, diversity is necessary.”
"I understand." Zuo Dajun smiled, "Hey! These removed cell clusters are mature blastocysts. Will they be implanted into an artificial uterus next?"
In the picture, those large cell clusters were removed one by one by a huge needle.
Fan Xiaoming nodded, "Yes! The next step is to implant these blastocysts into an artificial uterus, where they will grow and develop into healthy calves."
At this time, the picture in front of several people changed, or the picture returned to normal. The robot standing next to it removed the device and left.
Zuo Dajun came to the side and looked at it and said: "This needle is not big, but these cell clusters were taken away at once. If you hadn't seen it with your own eyes, you would have thought that every cell cluster here would develop into a cow. Using Breeding cattle in this way means that we can reproduce as many as we want, which also shows that using artificial womb technology, we humans can reproduce as much as we want."
Fan Xiaoming smiled and nodded, and said: "So far, most of these technologies have matured a year ago, otherwise we wouldn't be able to do in vitro fertilization. The key is the next step, artificial uterus. To be honest, this technology That’s quite complicated.”
Artificial womb technology has been studied for a long time.
If you think about it, you will know that even if this technology is not used on humans, it will be very beneficial when used in animal husbandry. It is also equally important for the protection of mammals.
There are many people doing research, but progress has been slow.
It was the gathering of relevant research results from around the world half a year ago, coupled with the in-depth research of thousands of research groups in the past six months, as well as the improvement of technical means, that artificial uterus technology was developed.
Now, the number of humans needs to increase significantly, and artificial womb technology has become even more valuable.
Some people died, but not completely...
