How did humans evolve?

It was evolved by apes

The mainstream view is more evolutionary, and people are more inclined to believe that humans evolved from apes.

The question of the origin of human beings is a topic of frequent concern, to some extent, human beings themselves are an independent species in the biological world, and if we look at the composition of organisms, human genes are actually very similar to many mammals. If we take a closer look, we will find that 98% of human genes are very similar to the original type, which is the main reason why the theory of evolution is believed to explain the origin of humans.

1. The theory of evolution states that human beings evolved from human beings.

2. Human evolution itself has many branches.

Third, we will be more inclined to think that humans evolved from Homo sapiens.

To sum up, humans evolved from apes, and the ancestors of humans were Homo sapiens.

It took a long time for humans to evolve step by step from apes, during which time humans mastered various survival skills and languages, and slowly became what they are now.

Human beings evolved through the continuous evolution of apes, and the evolutionary process of human beings is very complex, going through a long time and going through many stages.

Human beings evolved from apes, and they have evolved for so long, which is why there is the development of human beings now, and there are so many high-tech.

There are many people who think that humans evolved from apes, and that humans had some similarities in appearance with apes long ago.

It has gone through four stages: ape man, primitive man, sapiens man, and modern man.

Human evolution originated from forest apes, and developed step by step from primates through a long evolutionary process.

Due to the development of archaeology, prehistoric civilization has been gradually denied, and archaeology has most of the evolved hominin fossils. In conjunction with the discoveries of modern biology, it was discovered that genetic DNA is evolutionary, confirming the authenticity of the theory of neutral evolution.

Human origins: About 50 million years ago, primates evolved in a radial pattern, and higher primates (i.e., apes, such as macaques, golden monkeys, baboons, and apes) were differentiated from the lower primates protomonkeys.

Between 33 million and 24 million years ago, apes were born from the monkeys of the Old World (Narrow-nosed suborder). The earliest apes found in Egypt, the proto-apes (30 million years ago) and the Egyptian apes (aegyptopithecus, 26 million to 28 million years ago) already had some characteristics of great apes; Later Australopithecus fossils and forest Australopithecus (23 million to 10 million years ago) were widely distributed in Asia and Europe.

It has been found in continents and Africa. The proto-Conshure ape (13 million to 12 million years ago) in East Africa is already an ape, the ancestor of humans and African apes. The above australopithecus are all forest animals, walking on all fours, and belong to the group of apes climbing trees.

There are two groups of extant apes, African apes (gorillas, chimpanzees and humans) and Asian apes (gibbons and orangutans), and there is a clear boundary between these two groups, which apparently diverged between 12 million and 15 million years ago.

Between about 10 million years ago and about 380 or 2 million years ago, there are two types of fossil representations of transitional periods. One is Australopithecus rama and the other is Australopithecus australopithecus (many consider Australopithecus to be the ancestor of orangutans, and there have been discrepancies in the past in the reconstruction of jaw fragment specimens and the analysis of teeth. Therefore, Ramaucus is only relatively plausible as a fossil representative of the transitional period).

About 4.5 million years ago, humans and apes began to diverge, giving rise to Australopithecus ramanacus, which later evolved from Australopithecus australopithecus 2 million years ago, and further developed into modern humans. Regarding the process of human development, it is generally divided into four stages:

1. Early ape-man stage. It lived between 3 million and 1.5 million years ago, and already possessed the basic characteristics of humans, such as being able to walk upright and make simple gravel tools.

2. Late ape-man stage. About 2 million to 300,000 years ago, the body resembled a man, the brain was larger, and it could make more advanced paleolithic tools, and began to use fire, such as the Beijing ape man in Zhoukoudian, Beijing, China.

3. Early Homo sapiens (hominid) stage. Between 100,000 and 200,000 to 50,000 years ago, it gradually broke away from the characteristics of apes and was very close to modern humans, such as Neanderthals in Germany.

4. Late Homo sapiens (newcomer) stage. About 4-50,000 years ago, the evolution of human beings at this time showed a significant acceleration, and the morphology was very similar to that of modern humans, and culturally, there were already the art of carving and painting, and ornaments appeared. For example, in 1933, the cave man on the top of Zhoukoudian Keel Mountain was discovered.

At this time, primitive religions had already arisen and had entered a matriarchal society. In the late Homo sapiens stage, modern humans began to differentiate and form, and spread throughout the world.

From the proto-ape 30 million years ago to the present, we are slowly in history, what has human beings experienced? How did we evolve?

Human beings are the product of biological evolution, modern humans and modern apes share a common ancestor, and the origin process is divided into three stages: the ancient ape stage; also man and ape stage; The stage of a person who can make tools.

Experts say it evolved from an ape.

Humans were born from 2,000 ancestors in Africa 70,000 years ago, and the Chinese did not evolve from the "Peking ape", but came out of Africa.

In recent months, scientists from all over the world who have studied the origins of mankind have published articles using the latest genetic research, and the results have been striking. In August this year, the conclusion of a joint study by Stanford University and the Russian Scientific Society was published in the journal "Human Genes" that the current human population in the world is more than 6 billion people**, after a catastrophic extinction on the earth about 70,000 years ago, and there are about 2,000 people left, all in Africa. This small ethnic group of Africans has multiplied into the current human race of the world.

Because the genetic differences between the more than 6 billion people are very small, smaller than the differences between a few orangutans, this proves that humans are bred from a very small number of people.

The evolution process of human beings has gone through four stages: ape man, primitive man, sapiens man, and modern man.

1. Ape man.

Features: Less specialization of the tooth system, 2:1 tooth type

2:3, the incisors are perpendicular, the upper first premolars lack the fan-shape of apes, the upper first and second premolars are equal in size and similar to those of late apes, the crown is low, and the lower molars are 5 low teeth with a sharp point, etc.

In addition, it has the characteristics of the primitive narrow-nosed monkey, the body is as small as a home drawing, the cheeks are long and low, the ratio to the brain volume is large, the snout is protruding, and some species have tails. In the past, it was generally thought to be the ancestor of the gibbon, which is close to the common ancestor of monkeys and apes.

2. Primitive humans.

Characteristics: The skull is flat, the bone wall is thick, the supraorbital ridge is thick, the brain is significantly enlarged, the brain volume is about 800 ml to 1200 ml, the increase in brain volume is the biggest feature of the progress of Homo erectus, some anthropologists believe that Homo erectus has a human vocal language. The average height of Homo erectus is 160 cm, which is much larger than that of Australopithecus, and the structure of its lower limbs is very similar to that of humans, indicating that hominids have reached this stage of development, and their upright walking posture has been perfected.

3. Homo sapiens.

Early Homo sapiens life dates back to 250,000 to 40,000 years ago. The physique of early Homo sapiens is close to that of modern humans, with a brain capacity of 1300 1750 ml, but it still retains some primitive features, such as a well-developed eyebrow ridge, a low and slanted forehead, a flat and wide nose, a protruding jaw, and an inconspicuous chin.

The earliest early Homo sapiens fossils were discovered in 1856 in a cave in the Neanderthal valley near the German city of Düsseldorf, so humans at this stage were called Neanderthals in the past.

4. Modern class.

The modern class also refers to late Homo sapiens, which refers to fossil humans between 450,000 and 10,000 years ago. Late Homo sapiens weakened brow ridge, increased cranial height, retracted jaw, and pronounced chin, and their physical characteristics were not much different from those of modern humans. Their fossils are not only found in Europe, Asia, and Africa, but also in Oceania.

Cro-Magnon, discovered in France in 1868, was the first late Homo sapiens to be discovered, and its physique resembled that of modern Europeans.

Late Homo sapiens fossils found in Africa, morphology showing the characteristics of black Africans. In China, the Liujiang people, the Ziyang people, the mountaintop cave people, the Hetao people, etc., have been found, showing the characteristics of the Mongolian race. These fossils with different body characteristics indicate that modern humans were also formed when Homo sapiens appeared in the Late Shan Bu period, and anthropologists divide modern humans into three major races, namely Mongolians, Europa, and Negros.

Stages of human evolution:

1. Early ape-man stage: It lived about 30,000 to 150,000 years ago, and already had the basic characteristics of human beings, such as being able to walk upright and make simple gravel tools.

2. Late ape-man stage: about 20,000 to 30,000 years ago, the body is like a man, the brain is large, can make more advanced paleolithic tools, and began to use fire, such as the Beijing ape man in Zhoukoudian, Beijing, China.

3. Early Homo sapiens (hominid) stage: 1-20,000 to 50,000 years ago, gradually detached from the characteristics of apes, and very close to modern humans, such as Neanderthals in Germany.

4. Late Homo sapiens (new man) stage: about 4-50,000 years ago, the evolution of human beings at this time has accelerated significantly, and it has been very similar to modern humans in form.

Man evolved from apes.

In the evolution from ape to man, social activities played an important role, including social labor and the interaction between different individuals in the process of labor. Through the way of life such as gathering and hunting, complex forms of group organization were established. The social relationship of close interdependence and division of labor and cooperation between individuals in the group has been established, and an increasingly complex social organization has been established.

At the same time, language is needed for social activities, and language is used in all aspects of life, and writing is gradually developed, which promotes communication and exchange between people. At the same time, on the basis of language, there is a social culture, and the use of language and writing plays a crucial role in the evolution of the brain.

In the process of primate evolution, organisms are in an increasingly complex social structure, survival experience is accumulated and transmitted through the group from generation to generation, and the complex individual relationships in the group produce various physiological and psychological experiences, all of which promote the perception and cognition of life for nature and self.

Through the influence of complex behaviors and social activities, primates gradually distanced themselves from ordinary animals in terms of intelligence, and embarked on the road to a higher form of life.

Complex social activities have created human culture, which in turn has promoted the formation and development of human intelligence. It has taken a long time from the evolution of primates to humans, and this process is also the process of the development of primate intelligence, or the accumulation process of life's knowledge of nature and self, and the rapid development of intelligence is the key factor that contributes to the differentiation of some primates from ordinary animals.