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human species | The evolution of human beings on earth has its own history | Humans still have genes for hair coming all over the body | DNA | human

Humans still have genes for hair coming all over the body, what can be activated 

In humans, such a group of genes has been detected which are responsible for whether an animal will have body hairs or not. The surprising thing is that the gene responsible for the characteristic that humans lost millions of years ago is still alive in humans. Scientists have identified a group of genes that may reveal many secrets by comparing human genes with those of many mammals. 

Millions of years ago, the human species used to have hair all over the body. (Photo: Wikimedia Commons)

  • Millions of years ago, there used to be hair all over the human body.
  • Scientists have discovered its responsible gene group.
  • This discovery can be helpful in finding solutions to human health problems.

The evolution of human beings on earth has its own history. Many changes in its development are seen as important turning points. For getting the ability to walk straight, leaving the trees and walking on the ground are considered turning points. About one million years ago, the hair on the human body had stopped growing or, technically speaking, hair had replaced long hair. A new study has found that the set of genes responsible for having hair all over the body is still present in humans and has not been eradicated.

In this new study published in the eLife journal, the gene group responsible for body hair,
scientists have found that this was also a major change that caused changes in some human gene groups. It is decided by these whether the hair will remain on the whole body of the organism or not. Because of these genes, chimpanzees have hair on their body, while today’s humans ie Homo sapiens do not have hair.

In this study, researchers compared
the human genetic blueprint to the genes of 63 other mammals and tried to learn how different species evolved into hairless creatures at different times. In this research, those genes are also identified which are directly related to the hair of the whole body.

Answers to many questions will be found
It is being said about this discovery that one day this will help in the treatment of millions of people who are going bald. With the new technique of comparing changes in the genetic code of different mammals, scientists can get answers to many questions related to human health. 

A group of hundreds of genes (Ste of Genes) was responsible for having hair all over the body of humans. (Representational photo: Shutterstock)

There is the hope of getting important information,
this technique can also answer many mysterious questions, such as how cancer does not occur in a particular rat species and changes can be made in human genes through it. Did the gene group of humans change, their age can also be increased to more than 200 years like bowhead whales.
Sequencing is now getting faster
Peter Sudmant, assistant professor of integrative biology at the University of California, Berkeley, who was not involved in the study, believes this is a very powerful application. This method comes at a time when sequencing technology is rapidly advancing, enabling scientists to read long DNA sequences more quickly and accurately. 

In this study, scientists compared the genes of 63 mammals with the genes of humans. (Representational photo: Shutterstock)

These genes are inactive,
there can be many, ie hundreds of genes responsible for this quality. Scientists detected this gene group through computational tools and they also found that this group still exists but is inactive or ineffective in a way. Where such hairs were not needed in whales or dolphins, hence such hairs are not found in them. Scientists say that these genes had become dormant due to the tendency of the species to mold itself.

For humans, the loss of hair was beneficial to adapt to hot climates. Along with this, the ability to keep the body cool through the mechanism of sweating also developed. This also helped him in hunting. It is noteworthy that 99 percent of human DNA is found in chimpanzees, 85 percent in rats, and 80 percent in cows. At the same time, compared with other animals can also be helpful in identifying many types of genes, due to which many problems can be solved. 




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