:Genetics

the investigators Kingdom Join-based in the functional unit of Genomics of the advice of medical research in Oxford and the European institute molecular European of Bioinformatics of laboratory of biology in Cambridge had disclosed to the composition genetic of this of the most strange mammals of the world. They had analyzed blueprint of platypus, one of the DNA of some you only monotremble to survive that, of all the mammals, are the distantone related to the human beings. Platypus, a female nicknamed Glennie, was arranged in sequence for scientists in genome that it arranges in sequence the center of the school of the university of Washington of the medicine, of U.S.A. as the part of an international contribution of the research including scientists of the Joined Kingdom and Australia. The analysis is published in the introduction of 8 May of the nature.

Platypus is thought for diverged of a common ancestor shared with 170 human beings approximately million years has. The species has many characteristics that are original to the mammals; for the example it has the skin and it raises its young in milk. However, it also shows reptile-as characteristic; the females place eggs and the males produce venom. Some characteristics, such as a system specialized in the account of platypus that it uses the electricity to detect the food under the water (electro-reception), are original to monotremble them. The investigators had found that these diverse characteristics are espelhadas by one patchwork of the genes that if are similar to those of the reptiles, the birds and the other mammals. The investigator Chris Ponting of the linking of the functional unit of MRC Genomics in the university of said Oxford “genome of platypus is extremely important because it is the missing linking in our understanding of as we and other mammals evolves first. This is our back part of the ticket the time when all the mammals had placed eggs to suckling its young in milk. It also supplies a deep essential to the future advances in understanding biology and the evolution mammalian.”

The investigators procurararam genome for the sequences of the DNA that is original to monotrembles them, as.well.as those known to be involved in the production of venom, the electro-reception and the milk production in the other species. They had discovered that venom of platypus is a cocktail of the proteins that had had very different functions originally. Surprising, the same proteins are found in venom of the same reptile that venom of platypus and the serpent evolves independently. They had also found that platypus more has much chromosomes of the sex - the organized structures where the DNA is packed that it determines the sex - of that human beings. Platypus has ten chromosomes of the sex, compared with ours two. Moreover, the responsible sequences of the gene to determine the sex are more similar to those in the birds of that in the mammals. Ewan Birney, that lead to the analysis of genome executed in the European institute of Bioinformatics, commented “the looks of platypus as a mixture so stranger of mammalian, bird-as and characteristics reptilian and now we know that genome is a mixture ingualmente bizarre of all to these. Mlange of that is much more of one any one waited.”

The article was adaptou today for Medical Notice of the release of the original press.

Source: Louisa Wright
LaboratoryMolecular Biologia European