Jennifer Marshall Graves, A australian biologist, might be most commonly known for the dire prediction: the individual Y chromosome, which makes men male, could disappear completely within the next 5 million years. Within the last 190 million years, the amount of genes in the Y has plummeted from a lot more than 1,000 to roughly 50, a loss of greater than 95 %. The X chromosome, on the other hand, stands strong at approximately 1,000 genes.
Media effect happens to be predictable, with overheated headlines“Men that is proclaiming road to extinction.” But Graves, a biologist at Los Angeles Trobe University in Melbourne, records that 5 million years is just a time that is long a types such as ours, which can be just 200,000 years of age. More to the point, the loss of the Y chromosome might perhaps not spell catastrophe. If the Y does fade away, we might well establish brand new procedure for making males.
Experts are uncovering that the mechanisms that organisms used to figure out sex come in a remarkable state of flux.
Whenever one system is destroyed, development generally seems to come up with easily a brand brand new one. wild wild Birds, seafood and snakes have discovered countless methods of making women and men. (more…)