The current mainstream view in the scientific community is that humans and chimpanzees have a common ancestor. About 6 million years ago, humans and chimpanzees parted ways on their evolutionary paths, and in the long years to come, they gradually evolved into two completely different species.
In 1879, German biologist Walther Flemming discovered chromosomes. In the following decades, people gradually understood that chromosomes are the main carriers of genetic information , which are closely related to the continuation of species.
As the research on chromosomes continues to deepen, scientists are surprised to discover the fact that the number of human chromosomes is 23 pairs, while chimpanzees have 24 pairs of chromosomes. What’s even more strange is that not only chimpanzees, but also other “close relatives” of humans such as gorilla , orangutan , etc. also have 24 pairs of chromosomes.
(The picture above shows the 23 pairs of human chromosomes)
It should be pointed out that subsequent studies have shown that it is not that orangutans have more chromosomes, but that humans have fewer chromosomes. Therefore, we can draw a conclusion: humans have lost a pair of chromosomes in the past 6 million years.
Anyone with a little bit of biological knowledge knows that chromosomes are very important to organisms. If a person's chromosomes are abnormal, it is likely to have serious consequences. For example, in patients with "Down syndrome", it is because there is an extra chromosome in 21.
More importantly, for a species, many individuals with chromosomal abnormalities do not have the ability to give birth to offspring. This means that even if the first human ancestor with 23 pairs of chromosomes was normal, it would be difficult for him or her to pass on his genes to future generations.
But the fact is that all humans now have only 23 pairs of chromosomes. It must be said that this was a very confusing issue for scientists at the time.
Supporters of "prehistoric aliens" will certainly not let go of this excellent evidence. They believe that aliens came to the earth millions of years ago. For unknown purposes, these aliens used their advanced genetic technology to transform human ancestors, giving them the basis for wisdom, and they have since embarked on the road to overlords of the earth.
"Prehistoric aliens" can perfectly explain the origin of human beings and the eternal mystery of "why humans are the only intelligent creatures on earth."
So do scientists think that aliens have transformed humans?
In fact, because this statement lacks rigorous scientific basis, it is not recognized by the vast majority of scientists. With the development of science and technology and the in-depth research, scientists have made a major discovery, that is, chimpanzee chromosomes 12 and 13 can basically correspond to human chromosome 12 and .
(The picture above shows human chromosome 2)
This discovery shows that during the process of evolution, humans did not directly lose a pair of chromosomes, but the chromosomes fused. In other words, although 24 pairs of chromosomes have become 23 pairs, the relevant genetic information has not been lost, and this process can be completed through genetic mutation.
Based on this discovery, scientists speculate that the fusion of human chromosomes took many generations to complete. In this process, a genetic gene that can increase the probability of chromosome mutation is passed from generation to generation. When this probability reaches a critical point, multiple individuals with 23 pairs of chromosomes will appear in the human ancestor group at the same time and gradually develop and grow.
In the subsequent evolution process, due to some natural or man-made disaster, or the genetic gene with 23 pairs of chromosomes has certain advantages, other human ancestors with 24 pairs of chromosomes slowly disappeared.
In addition, there is an interesting theory that can simplify this process. The "Eve Theory" believes that all people on the earth now are descendants of the same African woman about 200,000 years ago. By the way, this theory currently has a lot of support. If you are interested, you can check the relevant information by yourself.
We don’t have a time machine, so we can’t travel through time and space for on-site inspections. We can only speculate on what happened in the past based on what we know. Objectively speaking, regarding this issue, the above two explanations have certain truths, and they also have their own shortcomings.
So, do you think the phenomenon of "human beings losing a pair of chromosomes" evolved naturally, or is it the work of aliens?
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