At this time, Zi Yan walked over with Junzi.

"Junko, how can you get so many people, don't be so nervous, it's not a big deal."

"Auntie, I didn't want you to come out, but my sister-in-law must let you come out for a walk, so I arranged it. You just knew that we were mixed up with the Little Oriental Killer again.

Brother Shi and I can be sure that the man came in unarmed, but I don't know why he came in with an extra samurai sword, and Brother Shi is checking that the knife came from him.

Being able to bring in such a big knife without being discovered, Brother Shi is afraid to think about it, he has just stopped all the hotel employees who have a relationship with us in the hotel, and they have replaced them with his own people.

Brother Shi is nervous now, and if there is a slight disturbance, he is worried that this is arranged according to his requirements. ”

"That's it! Then you two come to me tomorrow morning, and I have something to explain. ”

"Okay little auntie."

Under the heavy protection of everyone, Xiao Yuan walked around the garden in a boring way for a moment or two, and then returned to the hotel room, and began to have a deeper understanding of the mind that appeared in the past two days.

When Xiao Yuan was unconscious, he already knew some ways to use the mind, but his understanding of the entire ocean of mind power on the Liyuan bead was very superficial.

Xiao Yuan spread out his mind again, and his mind could barely transmit about 2 kilometers in the support of the ocean of mental power, and the various states of the world of 2 kilometers were presented in Xiao Yuan's mind, and Xiao Yuan led them to the soul network screen.

The flowers and grasses displayed on the screen are clearly visible, and the most rare thing is that he can taste a faint fragrance of flowers, Xiao Yuan began to look at this flower with his mind again, and he has always seen the DNA of the flower, so perfect spiral.

Xiao Yuan suddenly remembered, since I can see it, can I do gene splicing? But I can only see it, what about my light camera and light knife?

Xiao Yuan salivated when he thought of the Fox King's advanced light seed technique, and he couldn't help but think about how to get these technologies.

Xiao Yuan thought about it for half a year, his technology tree was getting more and more, and now he had obtained the space technology of the Ancient Gentleman's Kingdom, as well as some basic science, and he would wake up with a smile when he thought about sleeping.

I don't know when, he found that he was covered with a blanket, the lovely Lian Xue fell asleep on the edge of the bed, Xiao Yuan picked up the blanket and gently covered her, and he continued to observe a tree and a leaf.

A leaf, a small worm, can make Xiao Yuan study for a long time, especially their DNA (deoxyribonucleic acid), Xiao Yuan compared the base pairs of each organism.

Xiao Yuan knows on the earth: human beings have 23 pairs of chromosomes, of which there are 22 pairs of autosomes, and 1 pair of sex chromosomes, which are X chromosomes and Y chromosomes, sex chromosomes determine the sex of human beings, men each have an X chromosome and a Y chromosome, and women have two X chromosomes.

However, modern apes such as chimpanzees and gorillas have 24 pairs of chromosomes, and they have 1 pair of chromosomes more than humans, and humans seem to have 1 pair of chromosomes mysteriously disappeared.

Xiao Yuan has seen the comparison chart, on which the human chromosome 2 is relatively long, and the chromosomes of the chimpanzee corresponding to the human chromosome 2 are 2A and 2B.

As you can see from the figure, the 2A and 2B chromosomes of chimpanzees merged into the 2nd chromosome of humans, so what caused the merger of chromosomes 2A and 2B into chromosome 2?

It's easy to think about genetic engineering, who modified human genes to make human chromosome 2 longer?

So, some people thought of aliens, aliens participated in the history of human beings, this is the genetic engineering done by aliens in orangutans, at first people did not believe in it and went to find the answer from natural selection, but the generally more reasonable explanation is that the difference between human chromosome 2 and chimpanzee chromosome 2A and 2B is mainly the result of natural selection, which is caused by evolution, let's discuss the reasons for natural selection first.

The 1.23% genetic difference between humans and chimpanzees may hide the secret of human intelligence, and in Xiao Yuan's time and space, scientists found that humans have about 50 more special genes than chimpanzees, but humans have also lost some genes.

For example, human sense of smell is very poor, and it is incomparable with other mammals, the reason is that human beings have lost their olfactory receptor genes in the process of evolution, and the reason why human sense of smell is particularly poor is because human beings have better color vision, and the visual advantage makes up for the disadvantages of olfaction, so that the sense of smell slowly degenerates.

Human language is rich and colorful, while the language of chimpanzees is relatively monotonous, so human beings can transmit rich information through language, work together, form cities, societies, and produce huge productivity, while chimpanzee language is relatively simple, can not convey rich information, so that there is only a very simple cooperative relationship between them, and the gap between humans and chimpanzees in speech is also determined by related genes.

Evolutionary theory generally believes that human ancestors learned to use fire 1.5 million years ago, and by 700,000 years ago, fire began to be widely used to cook food, and eating cooked food can enable humans to obtain more nutrients.

The starch in the plant is heated and can be better absorbed by the human body, and the protein in the meat can not only be more easily absorbed by the human body after heating, but also produce a fragrance and make the taste better, which expands the source of meat and ensures the nutrients of human beings.

Brain capacity has also been expanded, and some nutrients may have contributed to the improvement of human cognitive ability, for example, fish oil is rich in docosahexaenoic acid, which is commonly known as DHA, and some scientists have found that DHA has an important impact on brain development, and humans are able to catch fish, while chimpanzees do not use fish as food in their natural state, because they are difficult to catch fish in the water.

Chimpanzees do not use fire, so they eat from plants, flowers, and fruits.

These parts of the plant contain simple sugars and carbohydrates, while for the roots, stems, and leaves of the plant, chimpanzees have a small range of options, as the roots, stems, and leaves of the plant tend to contain crude fiber and starch.

Crude fiber and starch are not heated, the taste and nutritional value are very poor, some are even poisonous, chimpanzees are actually vegetarians, they rarely eat meat, generally only catch some ants or monkeys, supplement protein.

In other words, the nutrition of food also plays a very important role in the evolution of humans, but humans used fire 1.5 million years ago, and chimpanzees parted ways with humans 6 million to 7 million years ago, and more than 6 million years ago, human genes were already very different from chimpanzees.