Men will become extinct?

According to genetic researchers, men are at risk of "extinction" because their Y chromosome is "dying" and will run out in the future.

That bleak future was revealed by Professor Jennifer Graves to medical students at the Irish College of Foreign Languages. However, that situation will not come within 5 million years and not all Y chromosomes will disappear.

"300 million years ago, the Y chromosome carried about 1,400 genes but now only 45 genes. With this rate, we will deplete the gene source on the Y chromosome in the next 5 million years. Y chromosomes will be 'extinct' and the question is what will happen after that? ' , Professor Graves said.

The Y chromosome contains a type of gene (SRY) that promotes the development of the testes, and also produces a male hormone that determines the sex of humans.

Professor Graves did not mention what would happen if the Y chromosome disappeared. 'Humans cannot reproduce monosyllies, like some lizards, because some of the main genes need to come from men. I think some other genes can be replaced if the main gene dies and scientists need to work hard to study this problem , 'she said.

The work of Professor Graves, Australian National University, Canberra, on sex evolution has paved the way for the diagnosis of genetic diseases as well as human gene disorders.

Will women take care of everything if men are "extinct"?

Sperm count is halved

According to geneticists' warnings, the sperm's biological state is getting worse and worse, including the decline in quantity and quality.

In 1992, the endocrinologist Skakkeback, Denmark, summarized the sperm count of 15,500 men in 20 different countries for half a century, showing that the number of sperms has decreased by almost half, from 113 million. 1 ml to 66 million.

In France, donated sperm research each year shows that sperm count is also reduced by 2% (89 million / ml in 1973 to 60 million / ml in 1992).

And British geneticists are alarming: 'Today's male Y chromosome size is only one-third that of the ancestors, the recession continues.'

Currently, the Y chromosome carries many harmful mutations that have never been seen in our ancestors. Each generation of men continues to accumulate more genetic errors.

Women are in the nucleus of two identical vital chromosomes, two X chromosomes. These can be called copies to ensure safety, because if one has a problem, then there is a that instead.

In men, in the cell nucleus, instead of the second and longest X chromosomes, they have only one 'single' Y chromosome. This piece of gene is only 1/50 the size of a complete gene, so it has almost no 'strength' and is less likely to regenerate.

'Men today can be condemned extinct on the evolutionary path of their own species,' said Professor Steve Jones, the author of the famous book of male origin.

Sykes stressed that children with Y chromosomes are considered to be born with birth defects, but their biological status is getting worse and worse, starting with a decline in volume. leads to a decrease in sperm quality.