Why is there only one species of Homo sapiens left?

In fact, the birth and extinction of organisms are very natural phenomena, and the human family is no exception, but other species of organisms, such as cats.

Today, there are 4 different species of animals living at the same time, but there is only 1 species in the human family, and the other members of the human genus became extinct one after another about 100,000 years ago.

Membership. According to the definition of anthropologists, scientists.

Ape people with a brain volume of more than 750 ml are called "people", and apes with a brain volume of less than 750 ml are classified as "apes".

According to this division, the first member of the Homo family is Homo sapiens, and after Homo sapiens, there are 17 different members of the genus Homo sapiens, such as Homo erectus, Neanderthal, etc. (there may be new members yet to be discovered), and all members are extinct except for us Homo sapiens.

Some genera became extinct before the advent of Homo sapiens, such as Homo sapiens, craftsmen, etc., while others lived on Earth with Homo sapiens for a period of time before becoming extinct.

For example: Neanderthals, Denisovans, Heidelbergs, Floresians, etc.

How did these members of the genus Homo who once lived at the same time as Homo sapiens become extinct?

Alternative hypothesis. Many people attribute the extinction of other members of the genus to a war with Homo sapiens. But scientists have found that there were other species that replaced the native races before Homo sapiens.

For example, 280,000 years ago, the Denisovans arrived in the Jinniu Mountain area of Liaoning Province, and after 8 years of survival struggle, they replaced the local Homo erectus in Beijing.

There are 4 genera and 8 species in the family Hominidae.

There is only one genus of Homo, and all other Homo animals are extinct, and the fastest wave of extinction is 70,000 years ago, mainly because Homo sapiens is too strong.

There is reproductive isolation between two large groups of human races. Homo sapiens belonged to this group of 23 pairs of chromosomes, and the only ones who had the opportunity to cross were Ni and Dan. And they do have some genes mixed with Homo sapiens, far less than 10%.

But only the autosomes are mixed in, that is, there is only one Adam and Eve, and they are all Homo sapiens.

Addendum: It can only be said that no Y or mitochondrial genes other than Homo sapiens have been found. Suppose it is suddenly discovered that a modern person has the Y gene of the Ni people, then there will be two changes in the academic world:

Homo sapiens and Homo sapiens will be redefined as two subspecies of human species, and the new Adam will no longer be Homo sapiens, but a common ancestor of a certain Homo sapiens and Homo sapiens.

Because no other race could use the changes in the natural environment, it was eliminated under the law of "survival of the fittest" in nature, and only Homo sapiens adapted to the environment and survived.

Because of their intelligence, human beings cannot tolerate species similar to themselves, because they know that the other party is their greatest threat. It was also because of their fierce competition that they were smarter and their brains more developed, and in the end, only Homo sapiens survived.

Because in our very early days, in ancient times, there was only one person left, and it may have been passed down from that era, and then it can never be changed.

Those who are not competitive enough have become extinct, and Homo sapiens has invented many things with an astonishing amount of brains to create what we are now.

Because there was only one species of Homo sapiens left in ancient humans a long, long time ago, this kind of human race should be passed down forever.

Because the most primitive human being is himself, so human beings should be left with only one species of themselves in the future.

Because leaving too much will have a great impact on society, so if you leave only one wheel of the car, if you leave all of them, it may make a big difference and make the society more chaotic.

The reason why Homo sapiens was able to conquer the world was because he had a unique language, could communicate well, and could use tools, and his brain was getting bigger and bigger.

Because now human beings are lightening their own work and making themselves more relaxed, so they need a lot of machines to provide for them.

Because this talent is what we want, and the brain must be full of wisdom to be better. So I hope that's better.

Because in the evolution of nature, living things will evolve all the time, and the ancestors of human beings are also evolving all the time, only Homo sapiens has evolved most thoroughly to adapt to the changes in the natural environment, and other human races have not adapted.

Because several other races could not stand the harsh natural environment, they slowly disappeared.

Maybe it's because of the survival of the fittest. In the process of evolution, the laws of development in nature were also followed, and those powerful and intelligent races continued.

Because the other 16 members did not adapt to the changes in the environment and disappeared, only Homo sapiens, which evolved relatively quickly, remained.

The main reason for this is because of Homo sapiens, which can better adapt to changes in the environment. And as the environment changes, they themselves can evolve better, so in the end, only they remain.

The main reason why only Homo sapiens is left in the end is that with evolution, it needs to adapt to the social needs of the applicable environment, and it as a whole cannot withstand this harsh environment.

I don't think it's related to one factor, it's an extremely complex system problem. If you have to draw two lines out, I think it is with the help of external forces, plus good luck.

The first is that our ancestors, Homo sapiens, knew how to use external forces. Clothes were invented, and clothes were worn out of East Africa. He is also good at using stone tools such as fire.

But these are not enough, because this goes out and is beaten down. The reason is that other races will too, so the use of tools is not the main thing. But at this time Homo sapiens took advantage of a more powerful external force:

Genetic mutations. To be precise, it is a mutation in the FOXP2 gene, which is responsible for language ability. After the mutation of the Homo sapiens gene, he began to be able to speak long sentences instead of jumping out of words one by one.

What's in it for you? It's that Homo sapiens can fight as a team, which is equivalent to the game now that it's black, and you can't do it alone, but Neanderthals can't carry a group of Homo sapiens together.

You may ask the Neanderthals, can't they? Actually, it's really not, they don't have a mutation in the foxp2 gene, so they don't have the ability to speak so much, and they can only say word by word, and can't form sentences. As a result, they are unable to form effective teams.

And the same is true of the human race, so it was wiped out by Homo sapiens. So this luck lies in the mutation of the foxp2 gene.

Of course, as I said at the beginning, it will never be determined by one or two factors, it is the result of many factors, and I have only listed one or two factors that I think are more important.

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There are only us on the earth now, and there were several people as early as 24,000 years ago!

All human beings in the modern world belong to the phylum Vertebrates, Mammalia, Primates, Hominidae, Homo, Homo sapiens, and Homo sapiens.

After the extinction of the dinosaurs, the mammals on the earth began to develop gradually, 60 million years ago the appearance of the Gaudina monkey, for today's human society opened a timetable, this is our primate ancestors, 10 million years ago, the primate has been accelerated, differentiation of a large number of genera and species belonging to the family, the direct descendants of the Gaudina monkey have differentiated a variety of apes, such as the famous Rama australopithecus. About 8 million years ago, one branch of Australopithecus diverged out, which is the ancestor of today's orangutans, and another branch of Australopithecus 7 million years ago diverged out, which is the ancestor of gorillas, after the completion of this differentiation, as the common ancestor of humans and chimpanzees, the Australopithecus evolved to a critical period, some began to walk upright and were able to make simple tools, this is the earliest ape-man, hominids officially appeared, and others evolved into today's chimpanzees. 3 million years ago, hominid evolution entered an accelerated period, there were a large number of apes of the genus Homo, to 700,000 years ago, most of these species of apes were eliminated, and the remaining genera of homini have high intelligence, among which Homo sapiens stands out, showing a strong ability to survive and develop, but other genera of hominids are not much behind, such as cavemen who are on a par with Homo sapiens in this period, and also created some early primitive civilizations, to 300,000 years ago, The surviving hominids have entered a period of relative stability, and each species has maintained a certain degree of stability, but due to the evolution of different genera and species of the same family for millions of years, the genetic relationship between genera and species has been relatively distant, so that it is impossible to produce hybrid offspring.

From 30 years ago to 10,000 years ago, there was a large-scale change in the species of hominids, and the only surviving hominid species was Homo sapiens of the genus Homo sapiens, and the others disappeared inexplicably, such as the famous caveman who disappeared during this period.

Therefore, Homo sapiens is the only living human race.

However, archaeological discoveries in recent years have shown that the Australopithecus, the common ancestor of humans and chimpanzees, was already an ape-man, walking upright, making tools, and working together. Genetic testing also provides evidence that chimpanzees are genetically closer to humans than to gorillas. If this is further established, then chimpanzees are another type of hominid, so that hominids have two genera and two genera.

Homo sapiens, that is, us, is not the only human race.

Now there are three explanations for this in the scientific community, which intersect with each other1, mating with Homo sapiens, being genetically assimilated, and it is said that Homo sapiens has a small percentage of genes from other races.

2. In order to compete for the living environment, human races conduct wars, just like ancient tribes fought between each other. Homo sapiens carried out genocide against other races, killing males, mating females, and the natural genomic extermination of reproductive isolation.

3. Unable to use the natural environment, it is gradually phased out.