Imagine a world where there are only women. A world of their own making, where they will rule and have their own principles. There will be no man in that world. Can this happen? It might sound like a dystopia to you, but science points to it. According to a study published in the 'International Journal of Molecular Sciences', as the world progresses, the size of the Y chromosome (chromosome) in humans is decreasing. One such study was also published in the prestigious science journal 'Nature'. Since these studies, the Y chromosome extinction debate has gained momentum. In fact, whether a person will be male or female is determined only by chromosomes. If there are two X chromosomes (XX) then the gender will be female. If the chromosomes are X and Y (XY) then the gender will be male. Overall, chromosomes are responsible for sex determination. Based on this study, scientists believe that the way the size of the Y chromosome is decreasing, there is a fear that one day this chromosome will completely disappear and men will stop being born on this earth. Then after the last generation of humans the entire human race will also be destroyed. So, today in 'Health Water' we will talk about this study related to Y Chromosome. You will also learn that – two species of rodents have lost their Y chromosome In humans and other mammals, the sex of a child is determined by a gene present on the Y chromosome. Therefore, that gene is called a male-determining gene and the Y chromosome is called a male-determining chromosome. This sex-determining chromosome is gradually weakening and is expected to disappear after a few hundred thousand years. Due to which the human race is also threatened with extinction. Prior to this, two species of mice had lost the Y chromosome. Understand everything easily through graphics. All organisms on earth undergo changes with time All organisms born on earth undergo some changes with time. These changes come as per the need of the time. Think of the early species of humans as monkeys. They had four legs and a tail. As time passed, the two front legs became hands, the tail became smaller and disappeared. Earlier all the fingers and toes of the hands and feet were identical. As time went on the less used fingers became smaller as needed. These are some of the changes that occur in our body. While many changes are taking place in our body even at the micro level. An important change is that of genes. Many of the genes on our Y chromosome are disappearing. Due to this its size is getting smaller. What did the study reveal? According to a study published in the International Journal of Molecular Sciences, a large number of active genes present on the Y chromosome have been lost in the approximately 170 million years since humans and platypus diverged. This has reduced from 900 to only 55. If this trend continues at the rate at which they are being destroyed, the Y chromosome could disappear entirely within the next 10 million years. Understand the study easily through graphics. This fear of human extinction has sparked a debate among scientists. Some scientists believe that the Y chromosome will last indefinitely, while others believe it will disappear in a few thousand years. A study in mice raises hope Researchers led by biologist Asato Kurowa of Hokkaido University in Japan found that in spiny mice most of the Y chromosome genes were transferred from the second chromosome. The researchers found that these mice survived even after the Y chromosome was lost. This is because all the genes present in the Y chromosome were transferred to the third chromosome. These chromosomes are present in all male mice, but absent in females. From this it seems that this is only a process of development. If one chromosome is lost, another male-specific chromosome takes its place, i.e. a chromosome that is present only in the male sex. The will to live is what keeps us alive Apart from science and spirituality, there is a theory that the will to live can keep anyone alive. Our will to live is what keeps us alive. Currently, the potential loss of the human Y chromosome is a concern. While this research done on rats is also raising hopes and expectations. This also suggests that our human species could potentially evolve a new sex-determining gene, ensuring the continued production of males. However, many scientists have also warned that such evolutionary changes could lead to the emergence of multiple sex-determination systems in humans. Which could potentially result in the creation of many new species. All in all, we are going to face an uncertain future, about which it is not possible to say anything very certain. However, this study in mice provides a glimmer of hope for human survival and opens new doors for research into gender determination and development.
Image Credit: (Divya-Bhaskar): Images/graphics belong to (Divya-Bhaskar).
Will men completely disappear from the earth?: The Y chromosome essential for male sex is headed for extinction, says study
