563
The Y-chromosome, which is, in fact, determines the sex of the person.
Geneticists say that in the future no one will congratulate women on March 8
On the eve of International Women's Day on 8 March in the scientific world with new force broke discussion on the future of the human race. More and more geneticists are inclined to think that any day a man will die like the dinosaurs, Novye Izvestia writes. Blame the so-called Y-chromosome, which is, in fact, determines the sex of the person.
first sounded the alarm, Professor Bryan Sykes of Oxford University. In his book "The Curse of Adam", published recently in the light, he drew attention to the fact that the Y-chromosome, which does not have a pair, gradually mutating and destroyed. "If it goes on, after 125 thousand years of it will be over. Men die. And the human race will disappear from the face of the Earth, if a persistent woman learn to multiply without them "- warns Professor. Scandalous book has received great fame in the British Isles, and far beyond them, however, did not take serious genetics it seriously, accusing colleague "in addiction to cheap populism." Soon, however, is another well-known geneticist, Professor Jennifer Graves of the Australian National University, made a similar postulate at the 15th International Conference on chromosomes, held at the University of Brunel.
The benefits of original sin
In order to understand what the Y-chromosome and what is its role in the evolution of man, we must go back to 300 million years ago. In those ancient times lived on Earth strange creatures who did not have sex. They are propagated mainly by parthenogenesis (when the egg develops into an embryo without fertilization), which appeared as a newborn in the white light is a replica of its ancestor. However, later in the hereditary mechanism took a failure. One of the X chromosomes lost their part and turned into a Y-chromosome. As a result, virtually all living creatures in the world are divided into female animals (XX chromosome set) and male (XY chromosome set) floor. "From an evolutionary point of view it was fully justified, - said Head of the Laboratory of Molecular Genetics of hereditary diseases of the Institute of Molecular Genetics, Russian Academy of Sciences, Ph.D. Peter Slominsky. - When asexual reproduction changes in the genome is extremely slow. In fact, children are only those mutations that have occurred in the genome of their immediate parent. In sexual reproduction occurs as a constant recombination. Half of the genetic information the child receives from his father, and a half - from the mother. Yes, and beneficial mutations are distributed twice as fast. All this provides a great diversity within species. " Thus species that have fallen to sexual reproduction, got a huge advantage over those who continued to breed "blameless" and almost completely ousted them from the face of the Earth,
On the eve of International Women's Day on 8 March in the scientific world with new force broke discussion on the future of the human race. More and more geneticists are inclined to think that any day a man will die like the dinosaurs, Novye Izvestia writes. Blame the so-called Y-chromosome, which is, in fact, determines the sex of the person.
first sounded the alarm, Professor Bryan Sykes of Oxford University. In his book "The Curse of Adam", published recently in the light, he drew attention to the fact that the Y-chromosome, which does not have a pair, gradually mutating and destroyed. "If it goes on, after 125 thousand years of it will be over. Men die. And the human race will disappear from the face of the Earth, if a persistent woman learn to multiply without them "- warns Professor. Scandalous book has received great fame in the British Isles, and far beyond them, however, did not take serious genetics it seriously, accusing colleague "in addiction to cheap populism." Soon, however, is another well-known geneticist, Professor Jennifer Graves of the Australian National University, made a similar postulate at the 15th International Conference on chromosomes, held at the University of Brunel.
The benefits of original sin
In order to understand what the Y-chromosome and what is its role in the evolution of man, we must go back to 300 million years ago. In those ancient times lived on Earth strange creatures who did not have sex. They are propagated mainly by parthenogenesis (when the egg develops into an embryo without fertilization), which appeared as a newborn in the white light is a replica of its ancestor. However, later in the hereditary mechanism took a failure. One of the X chromosomes lost their part and turned into a Y-chromosome. As a result, virtually all living creatures in the world are divided into female animals (XX chromosome set) and male (XY chromosome set) floor. "From an evolutionary point of view it was fully justified, - said Head of the Laboratory of Molecular Genetics of hereditary diseases of the Institute of Molecular Genetics, Russian Academy of Sciences, Ph.D. Peter Slominsky. - When asexual reproduction changes in the genome is extremely slow. In fact, children are only those mutations that have occurred in the genome of their immediate parent. In sexual reproduction occurs as a constant recombination. Half of the genetic information the child receives from his father, and a half - from the mother. Yes, and beneficial mutations are distributed twice as fast. All this provides a great diversity within species. " Thus species that have fallen to sexual reproduction, got a huge advantage over those who continued to breed "blameless" and almost completely ousted them from the face of the Earth,
