Evolution of Human

May 31, 2021
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There are various hypothesis about the evolution of human being. Owing to the fact that some of the characteristics of humans are similar to those of monkeys, many scientists predict that monkeys have genetically evolved to humans with time. Is it just a theory? Is it true that humans directly evolved from apes or monkeys? Let’s deep-dive into what human evolution says.

Introduction of Ancient Men | Theories of Evolution of Human Being

The scientific name of the human being is Homo sapiens, which is derived from “Homo genus and sapiens species”. It is been proven that humans originated in the region of the African continent 23 to 24 million years ago. All the other species of that time except humans are extinct.

The question remains as to why other species became extinct apart from humans. We will find the answer to this question in the inheritance theory proposed by scientist Lamarck and Darwinism. Lamarck said, “As the environment changes, the animals need to adapt the behavior of their own. Otherwise, they will not be able to survive in nature”. On the contrary, Darwin’s theory also said about the struggle for existence and the survival of the fittest. He said, “Only those within the group of creatures who can appropriately deal with the different adverse situation of nature, can survive”.

Evolution of Human

Survival Techniques of Human Being | Traits of Human: Primitive Phase & Modern Phase

The closest animal which resembles a modern human is the Homo erectus. They originated from the continent of Africa. After that, they spread to different parts of the world from about 50,000 to 100,000 years ago, however, they did not last long. From the Biological theorist history, it was found that the biggest cause of Erectus‘ death was natural hostility. They were too fragile to fight with nature and they could not adapt themselves to that environment. However, it is predicted Homo erectus did not cross the Ngandong, Central Java, Indonesia as far as possible because many fossils of Homo erectus were later found there.

Homo sapiens had no competitors to survive, nevertheless faced many evolutionary changes to survive in that hostile environment. Although many of us believe that humans evolved from monkeys, however this is not true. The ancestor of both of them was the same. However, in the case of primitive people, the development of their brain and physical growth was different. These adverse environmental conditions are mainly responsible for the physical and mental development of human beings. 

We will now discuss some common comparisons between primitive humans and modern humans and some physical changes of modern men. At first, we will see the traits of primitive men then the modern. Primitive men were short in size where modern humans are near to 1.65-1.75 meters long on average. Primitive humans tooth formations were spread all over the jaws but modern human teeth are sorted and well arranged. The length of primitive humans’ teeth was much longer than the length of modern humans.

The brain formation (i.e. internal structure) of primitive men did not develop, rather it was too simple as a result their intellect was not so advanced. On the other hand, today’s human brain is powerful enough to capture like 2.5 million gigabytes of the digital SSD card system. It is the most complex brain on the whole animal planet. 

The primitive peoples’ foreheads were slightly flattened and tilted backward. But the forehead of modern man is straight and a little bit curb on both sides. The primitive people could walk straight like modern people. 

One of the most common question about Homo sapiens: If the origin is the same then why are there so many differences in the present species. The reason is, it follows the Darwinism theory of natural selection. The effects of weather, environment, air pressure, geographical location, ecological factor, etc. are the main causes of these differences.

Around 150 years after Darwinism, scientist Wiseman re-evaluated the his theory and said, “All the organs in the body of the primitive people have been transmitted to the modern human body. But there are some organs which remained inactive.” The inactive organs are- Nictitating membrane of eyes, Molar teeth of gum, three ear muscles of the Auricle, Appendix, last five vertebrae named coccyx, body hair, breasts in male person, etc. are some of them. 

The life-Style of Ancient People and the Modern People

Primitive Homo sapiens changed their way of life and body structure to survive in that hostile environment. For this reason, there were many traits in our primitive men that we do not possess now. Currently, the life of modern people is much improved and complex. On the otherhand, primitive men lived in the cave of heels or above on the tree. They didn’t have clothes to wear, they hunt animals and ate raw meats. They made their clothes with skins of animals or sometimes with the leaves of trees. They did not know how to talk as a result used some sign languages to maintain communication.

With the evolution of human, gradually they learned to be civilized. They learn how to light the fires, how to cook foods, how to talk to others. Now they are civilized enough that they can keep their sign into Mars as well as the moon. Now they are the conqueror of the world.

Time is variable. The era is changing. So with the change of time and era, human civilization has also changed and will continue to do so.

Article Categories:
communication · Lifestyle · People · World

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