Scientists say that in 5 million years men will become extinct: women will reproduce alone

□Morning Reporter Zhong Zijuan Comprehensive Report\  "Let all men die," is a line commonly found in romance novels. Millions of years from now, this might become reality. According to the British Daily Mail on the 2nd, Professor Jenny Graves from the University of Canberra in Australia predicts that due to the gradual degeneration of the Y chromosome, male humans will become extinct on Earth in 5 million years.\  "The process of extinction has already begun"\  Graves is one of the most influential scientists in Australia. Recently, she stated in a public lecture at the Australian Academy of Science that the male-exclusive Y chromosome is very fragile and cannot repair the damage caused by genetic mutations by itself. This means that men are heading towards extinction, and the process has already begun.\  Graves explained that the X chromosome contains about 1,000 healthy genes, and originally the Y chromosome had as many genes as the X chromosome. However, after a long evolutionary process, the modern male's Y chromosome now contains less than 100 genes.\  She explained that women, having two X chromosomes, can "exchange information" during genetic mutations and repair themselves by copying healthy genes from each other. In contrast, the male Y chromosome, lacking a "partner," cannot repair its defects through mirrored copying, causing genetic defects to be inherited from generation to generation, leading to the gradual degeneration of the Y chromosome. "The remaining genes on the Y chromosome are basically 'junk.' I call it a foolish design," Graves said in her lecture.\  According to her calculations, the Y chromosome will completely disappear in 5 million years. Once the Y chromosome disappears, men will also become extinct.\  Females may reproduce on their own\  So, if men do go extinct, can humanity still survive? Graves believes that once the Y chromosome disappears, another chromosome could take over the function of the Y chromosome, which would lead to the emergence of a new type of human. In fact, there is already a precedent in nature: a Japanese spiny rat survived despite losing its Y chromosome.\  Additionally, some scientists believe that even if there are no men on Earth, women could still reproduce through "parthenogenesis."Currently, British researchers have mastered the technology to cultivate 'artificial sperm' from male bone marrow cells. The next step is to cultivate 'artificial sperm' from female bone marrow cells. Once successful, in at most three to five years, women will be able to reproduce independently without relying on men. However, since the 'artificial sperm' cultivated from female stem cells does not have a Y chromosome, all offspring will be girls. (br)PS: I hope this day comes sooner~