The male gene is degenerating constantly the earth will change " L Daughter's country " ?

The male gene is degenerating constantly, the earth will change " L Daughter's country " ?
Negative and positive, male and female, men and women, the mankind has already got used to coming to the two sexes world that exist in several million years. According to Britain >Report on May 21, Sri Lankan of Australian geneticist Jennifer and Glavey, affirms outside the Irish imperial family on once learned report of the academy of sciences, because the chromosome gene withers and aggravates, men have already stood on the road of leading to and becoming extinct. Will this woman scientist's prophecy come true? Man's outstanding gene is being lacked Nobel Prize for natural science winner rarely seen women, the thought beginners leading the human society to advance are often a plurality of fields that men seem to live in the society, the male one does very well . This phenomenon no doubt relates to the fact that women in history receive and confine greatly, but the male one's own advantage can't be ignored either. Some scientists attempt to look for the answer from molecular biology, the conclusion is - -Outstanding gene of male possession . Exist in every cell of the human body 46 pieces of chromosome (The carriers of the gene ) ,Make up 23 pairs, they are determining all characteristics of the human health. Among them, 22, until 44 chromosome and gender there is not direct relation altogether, belong to men and women and have together, known as the autosome . The 23rd is called the sex chromosome the chromosome, including X and Y chromosome, the male sex chromosome is X Y, women are X X. Half of sex chromosome comes from father, half comes from mother, present the probability that X Y and X X make up and each take half. Y The chromosome is that men are unique . Compared with X chromosome and autosome, the stature of Y chromosome is much smaller. According to the data which the human genetic centre of London University institute offer, about 500 ten thousand years ago, the gender differences at the human genetic level begin to take shape, X and Y chromosome produced from the alienation of autosome. Except Y chromosome, other chromosome include X chromosome, exist in pairs. At the time of cell division, at if chromosomes in pairs defect will be appeared to each,between two chromosome " L Contrast " R Can correct the mistake quickly, can mend the part lacked quickly through duplicating. But male the intersection of X Y and chromosome can go on oneself mend, this causes in the evolution of several million years, Y the gene on the chromosome is reducing constantly, this is nearly a kind of irreversible trend. Check order according to the newest chromosome, the gene on the human Y chromosome is fewer than 80 (ancient mankind have 1438 genes at most) ,X The gene of the chromosome does not change much. Y The genetic disappearance intensity of the chromosome is very surprising, and already produced the prominent consequence. According to Britain>Data that magazine offer, sterile man in 15 find sterility of them to lack, lead to the fact wholly already on one's body in 5. The scientist is anxious, pass one more period of time long enough, the reduction of genetic number is enough to multiply and exert an enormous influence on the mankind on Y chromosome.Women's very single reproduction? Australian geneticist Glavey thinks, though Y chromosome is degenerating constantly in Sri Lankan, but its course is slow. According to the present situation, Y chromosome probably also take 500 ten thousand years to totally disappear. Certainly the mankind will not await one's doom, in order to extend the population, day by day developed biotechnology may be used too.How have men disappeared to do? This topic is very high in the frequency that people appear after dinner. How extend human population with new way, can find out about just a few from some living beings of front technically, for example the one that is paid close attention to is " L The artificial sperm " R Technology. Britain>The article of the magazine claims, last February, the scientist of Britain Newcastle university said, they will draw the stem cell from a woman's donor's bone marrow in the experiment, then foster these stem cells " L The artificial sperm " . They hope for women during the course of cultivating early in two years " The artificial sperm " ,Take 3 years more, they can cultivate the ripe one " L The artificial sperm " . Though the at present unripe technology, it let woman as one " L Give birth to child D me Y " Idea,the realization one possibility getting larger very. Besides biotechnology, it is possible for the scientists to probe into the mankind too agamically. The male Y chromosome has an important gene - -S R Y, this gene relates to testis development, secrete grand sex hormone which determines the male characteristic at the same time. Scientific circles does not generally think the mankind can take the parthenogenesis or agamic way like lizard. The reason lies in: Some genes playing a key role must be offered by man. But Glavey's Sri Lankan finds under study for action, two kinds of rodents - -Mole shape field mice and Japanese rural mice in eastern Europe - -Does not contain Y chromosome and S R Y gene in the body, healthy male mole shape field mouse and rural mouse are numerous in quantity. " Other genes must act the part of S R Y, we wonder very much what gene it is on earth. " Glavey says in Sri Lankan. Expert of Russia sexology the intersection of Oleg and doses of Linchuck think as one possible to become extinct species man, the ones that may present substitutability " L Third " ,Namely male and female and body such as the similar trees, this kind of people may have a man nature organ, also have women nature organs, can multiply the offspring in a brand-new way. There are more and more such people, for example in Europe, there is one in every 5000 neonates. This kind of gene mutation is accidental representing the future trend, there is no final conclusion in scientific circles at present. On the whole the mankind is still evolving In mankind's history in several million years, the prominent degradation of Y chromosome has already had a big impact on mankind. But the mankind of today has more advanced science and technology, genetic technology, manpower assist technology such as reproduction to show, the mankind decodes the Creator's life password with one's own intelligence and wisdom. The gene is lacked though let some men face sterility, but on the whole the mankind is still evolving. U.S.A.>Magazine websites report recently, a research group in U.S.A. is here>(P N a S) Publish the article and claim, the mankind of today evolved faster than in the past, adapted to the environment instantly even more. Mankind evolve still, this let a lot of people to be hopeful to the intersection of Y and future and the mankind's future of chromosome, firmly oppose the mankind degradates in the backwardness mechanism of asexual reproduction of going back and hits. The party opposing Y chromosome withers away thinks, Y chromosome may check the step while degenerating to certain extent, even evolve out and protect one's own structure. According to the national public broadcasting station (N P R) of U.S.A. The report, Massachusetts Institute of Technology (M I T) Scientists of Whitehead Institute David and Page find while checking order in the chromosome, Y more than 5000 piece of chromosome base to in,is there more than 600 pieces at palindrome structure (D N A in chromosome last pairs of structures spiral nearly, if two sections of base orders on the corresponding chromosome two strands of an area among them are actually all the same, this area is one " L The palindrome structure " ) China. There is the longest section of palindrome structure 300 ten thousand bases are right . Scientist say, have a large amount of the intersection of palindrome and structure, Y chromosome seem only picture " L Full of the halls of mirrors " .Discover, having held a lot of genes in the palindrome structure of Y chromosome, two sections of corresponding arrays in the palindrome structure are the same in fact, so a gene has two duplicates in the palindrome structure. In this way, though the chromosome that Y chromosome has not mated is suitable for exchanging the hereditary material, but can finish one kind in inside " L The gene is changed " R Course, carry on similar repair to the genetic mutation. This makes Y chromosome realize and self- repair as body of other dyeing. Y Chromosome can wither away finally, depend on palindrome structure in how big intensity remedy the gene, lack the losses brought. (young reference fort full of trees)
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