Recently, Darling Griffin, a professor of genetics at the University of Kent, wrote an article titled "The Y chromosome is disappearing - what will the males do?" for the Australian explanatory news website dialogue network. He said that the Y chromosome is rapidly degenerating and it is speculated that it will disappear completely after 4.6 million years. But even so, it does not mean that men will disappear.
The Y chromosome carries the SRY gene that determines whether the embryo is male (XY) or female (XX). In other words, at least for now it seems that having a Y chromosome is a necessary and sufficient condition for becoming a male. But think in reverse that the Y chromosome is not an essential chromosome for life, as Professor Darling Griffin wrote: "After all, women without a Y chromosome also live well."
The Y chromosome is shrunken compared to the two normal X chromosomes that women possess. Darling Griffin explained that as early as more than 160 million years ago, the "original-Y" chromosome was the same size as the X chromosome and contained the same gene. "However, there is a fundamental flaw in the Y chromosome: unlike all other chromosomes in biological cells that have two copies, the Y chromosome only appears as a single copy, passed from father to son." This means that it cannot be recombined with genes. Eliminate harmful gene mutations and escape the fate of degradation.
But even if the predictions of scientists come true, it does not mean that men will disappear. Darin Griffin said that by then, the sex-determining SRY gene will migrate to other chromosomes, but this chromosome will eventually face the same fate as the Y chromosome.
Sodium Erythorbate Fcc Grade,Sodium Erythorbate Powder,Sodium Erythorbate Food Additive,Food Grade Sodium Erythorbate
SHANDONG BAISHENG BIOTECHNOLOGY CO., LTD , https://www.baishengbioproducts.com