Evidence for evolution has been discovered! Humans are witnessing their own accelerated evolution, with new blood vessels growing in their arms

The question of the origin of mankind has always troubled us. With the development of science, scholars also began to search for answers along the path of science. Among them, Darwin's "Origin of Species" gives a theoretical framework that is widely accepted by the academic circle, which is also known as the theory of evolution. However, the theory of evolution is not very strict, more precisely the theory of evolution. Darwin believed that all living things evolved.

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In nature, organisms will have certain mutations when they reproduce the next generation. When the mutations accumulate to a certain extent, they will evolve into different shapes than before. The natural environment is constantly changing, and these organisms will be screened. Known as natural selection, those organisms that adapt to the environment will be kept, and those that do not adapt to the environment will be eliminated. This is also known as natural selection, survival of the fittest.

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Many people will question, if living things really evolve, why can't we feel it? Or can't find evidence of biological evolution?

Has human evolution stopped?

After Darwin's theory of evolution was put forward, it was greatly criticized, especially by religious people. However, with the development of more than 100 years, the academic circle has now accepted this view, and has also developed the theory of evolution on the basis of Darwin, combining many contents of modern biology, which is also known as the theory of modern biological evolution, the theory of evolution itself is also evolving. These are also incorporated into textbooks for high schools and universities around the world.

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Not only are theories evolving, but more evidence supporting evolution is emerging. First of all, we can't feel evolution because the time is too short. According to Darwin's theory, it takes at least hundreds of thousands of years, or even millions of years, for organisms to change significantly. Secondly, biologists have actually found a lot of fossil evidence of biological evolution. Not only that, combined with the theory of molecular biology, we can also prove from the perspective of genes that evolution does exist.

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In recent years, some scholars have also suggested that human evolution seems to have slowed or stopped. The main reason is that the further development of human science, especially the development of human medicine, makes it no longer necessary for human beings to change the genes of the entire population through reproduction to cope with natural selection. Is that really the case?

Evidence that humans are evolving

Some researchers have found that in the past 100 years, some people have an extra blood vessel in their arms, which is also called the leftover median artery. This may be evidence that humans are evolving, so what exactly is going on?

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In fact, the median artery appears as early as 8 weeks before the mother's pregnancy. It appears in the early stage of embryonic development and plays a role in supplying blood to the hand. It is located in the forearm.

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Around 8 weeks of gestation, the median artery gradually disappears under the control of genes, and its original position is occupied by other tissues. However, scientists later found that the median artery in some people is not disappearing, which is likely because the functions of related genes are inhibited. As for the reason for the inhibition, scientists have not yet figured out.

In order to get a more detailed situation, scientists read a lot of data, and analyzed the proportion of people with median arteries in the population from the dimension of time, and drew a table at the same time.

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From this table, it is easy to see that there has been an increase in the number of people with median arteries in the population over the past 100 years. The proportion of humans with median arteries is now three times higher than it was 100 years ago. Not only that, but the rate of growth in the past 100 years has been much faster than in the next 250 years, implying that the evolution of the median artery is accelerating. If this trend continues, scientists predict that in 200 years, all human beings will have this new median artery.

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Scientists also found that the appearance of the median artery may enhance the strength of the human forearm, so that the human arm will not easily fatigue, and in emergency situations, it can also provide additional blood. Judging from the work that humans are currently engaged in, the median artery is indeed beneficial for humans to adapt to the environment.

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Humans have evolved a new trait from a trait they never had before. Therefore, this study is considered to be evidence that humans are evolving. There are many similar examples, especially with the rise of the industrial revolution, which has greatly changed the way of life of human beings. At the same time, the development of medicine has also changed the efficiency of human disease control. These two points have made a qualitative change in the "natural selection" faced by human beings. Under completely new natural conditions, it is not surprising that human beings will have various evolutionary adaptations to the environment.