Y-chromosome will not disappear and the presence of men on the planet will continue
Last reviewed: 16.10.2021
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Scientists predicted full extinction for men in the next five million years, but recent studies have shown that the Y-chromosome will not disappear and the presence of men on the planet will continue.
As it turned out, the message that the men will gradually die out turned out to be too exaggerated. Previously, scientists assumed that the gradual disappearance of the Y-chromosome would lead to the inevitable disappearance of the stronger sex within five million years. But at one of the universities in California, a group of researchers led by biologist Melissa Wilson Cyrus made a genetic analysis, and as a result, determined that in the future, women would not have to resort to in vitro fertilization (IVF), since the male genes were quite stable. Specialists compared the Y chromosomes of 16 representatives of the strong half of humanity from Africa and Europe.
As noted by Dr. Cyrus, the male chromosome no longer contains 90% of gene information, which she shared with the X chromosome in the past. A study of scientists found that the remaining genes, as well as those that "flowed" from the female into the male, will retain their original meaning for a long time. In volunteers, scientists noted in the process of natural selection the safety of the sequence of genetic variations of the male chromosome. This means that the cells adhere to their genetic content, which significantly affects male fertility.
About 200 million years ago, mammals were a relatively new kind of life on earth. One of the first versions of the X and Y chromosomes was represented by interactive pairs. With each new generation, cells exchanged certain genetic information, so the offspring had a mixture of genes from both parents. Over time, the Y-chromosome became more specific, it began to attract genes that contributed to the development of testes, seeds, spermatozoa. Such genes were harmful to women, which led to the fact that male and female chromosomes ceased to exchange genetic information and in the future began to develop independently.
Currently, the female body has a similar pair of X chromosomes, and the male - XY. As a result of the fact that X and Y are unable to exchange genetic information, the Y chromosome is more sensitive to natural selection, which is the reason for the scientists' assumption of the gradual extinction of the masculine gender on the planet. Previously, scientists allowed the probability that the mutation of the Y-chromosome would affect the formation of the male at conception. As a result of the changes, the chromosome could completely change its structure, which would become the reason for the extinction of men on Earth.
Genes, as established by molecular biology, are specific areas of DNA that carry information about the structure of an RNA molecule or protein that, in conjunction with other functional molecules, determine future growth and development of a person during conception.