Wednesday, February 20, 2013

Discover : 3 gene let humanbeing evolution to be special population

Discover : 3 gene let humanbeing evolution to be special population
30 hundred million bases since human genome to in if you can't if you can't look for, evolve, human gene is for one of easy things after appearing. Now, a group of researchers find and is not encoded 3 genes that DNA produced, perhaps it is they that help humanbeing evolution into the unique population.
Mankind and chimpanzee are very similar in science of heredity, but we are easy to distinguish between the two more different. According to>The network edition of the magazine reveals, the scientist obtains an essential genetic discovery recently, these genes, with closely related with the mankind after the branch in other primatesing, this has offered new possibility for understanding what has made us become the unique mankind.
Molecule evolve general view of field, new gene can only from through duplicate or recombinate, develop existing gene before. Most genes are of long standing and well established, history is long, can trace back the human ancestor and live in the period on the tree, can even trace back to the microorganism long long ago. Rise to several ten thousand human genes from thousands of genes of the microorganism, until genome duplicate and gene duplicate whom incident realize mainly, duplicate and create another group of genes, then freedom develops out new array and new function.
The great majority are duplicated and happened before the mankind was born, only minority happen in the human pedigree. Considered to be the extremely impossible thing from a once not active genetic production and a functional albumen code gene. However, the latest research shows, this phenomenon really exists in fact.
Researchers find, on fruit bat, yeast and primate, are not encoded the gene that DNA produced, until at present, find the intersection of mankind and unique gene this kind of yet. This discovery has put forward a fascinating question - -How are these genes to bring up difference between we and other primates.
In this research, holy three one the intersection of institute and genetic the intersection of David and the intersection of Nao and Les and of research institute, Dublin of Irish, Saite, McCrie of Philippine, bear, find chimpanzee in the genome in human genome also Arduous task that the protein not had encodes the gene. They check and get rid of some wrong results systematically through the strict sieve, it only has 3 genes left to stand for election on genetic list finally. However, the challenge that they face is to need to prove these genes in human DNA really have an active one.
Researchers can duplicate and the evidence that translated to collect from other research to these 3 genes into protein rotates actively, but it does not prove the corresponding DNA array actively on other primates that they need at the same time. They find, DNA array in some apes and monkey's populations includes knowing the difference of making the albumen code gene fail, this indicates these genes are inactive on old primate.
Researchers still notice, because of adopting strict filtration to set up, about 20% of the human genes are suitable to analyze. So, they estimate that probably there are 18 to encode human particular genes that DNA produce in humanbeing evolution. Compare with genetic the intersection of total number and 2.4 Wan, the number a little insufficient dish nearly, but essential.
The discovery that the human new protein encodes the gene is a great discovery, but put forward a greater question: What for is it by the albumens of these genetic codes? They are different from any other human genes, may bring deep influence. Though the characteristics and functions of these genes are not still clear at present, researchers infer boldly, it is these human characterized genes that have brought up mankind's characterized properties.
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