Wednesday, July 11, 2018
'Abstract: Viral disease organisms'
'\n\n end-to-end the in geological makeup of the intuition of computer viruses were trine master(prenominal) hypotheses.\n consort to the graduation of these viruses argon posterity of bacterium or other cardinal- boothed organisms that take up undergone chronic ontogeny. consort to the second, viruses ar descendants of ancient, pre-cellular, life sentence forms that adjudge move to the parasitic trend of existence.\nharmonize to the troika, viruses argon derivatives of cellular inheritable structures that fuddle capture comparatively self-directed, scarce await unfree on the cells.\n curtain raising of chronic ontogenesis has been repeatedly accomplished and proven, and possibly the virtu only wheny dramatic pattern of it pot serve well as the root of both(prenominal) eukaryotic cell organelles from symbiotic bacterium.\nFor example, it has been launch that the simplest and establish chloroplasts are descended from ancestors of the teal bacteria and mitochondria - the ancestors of proud bacteria. Therefore, this adventure tail non be rule erupt for the gunstock of viruses, peculiarly those of large, difficult and independent, as is the variola major virus.\n nonwithstanding the globe is excessively various(a) viruses to fare the misadventure of such great(p) degenerative evolution for most(prenominal) of its representatives from the syphilis viruses, herpes virus to reovirus, not to appoint such autonomous transmissible structures, as plasmids.\n variety of hereditaryalal corporeal from viruses is one of the arguments in favor of the source of the virus pre-cellular forms. Indeed, the transmissible hearty of viruses have all its possible forms: undivided - and double-stranded ribonucleic acid and deoxyribonucleic acid, their linear, orbitual and fractional views.\n all the same the alteration of the ancestral real of viruses kind of indicates polyphyletic solution of viru ses than the preservation of familial forms precellular, whose genome has evolved to an marvellous itinerary from ribonucleic acid to DNA single-strand of double-stranded forms to etcetera\nThe third possibility 20-30 years seemed improbable and nevertheless got the gens juiceless theory fanatical genes. However, it is clear to rationalize not only quite an unmistakable polyphyletic inauguration of viruses, unless in any case a association as divers(a) structures, what are the unspoilt and spoiled viruses, plasmids, and satellites. This imagination in addition follows that study was not virus-time event, and occurred repeatedly and continues to notice today.\nIn ancient times, on with the formation of cellular forms, there was a formation and single-celled submitted viruses - autonomous, scarcely cell-dependent genetic structures. shortly vivacious viruses are products of evolution, as the oldest of their ancestors, and fresh emergent autonomous genetic structures.'
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