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Journey to the Invisible World

... apart from the Trans-Baikal region, here belong the “Udachny” (“Lucky”) geyser of the Kamchatka Geyser Valley. We suppose that in Zabaikalie archaebacteria Crenarchaeota must be found, the study of whose genetic organization might help reveal evolutionary relations and direction of development of modern archaea and bacteria. There are a lot of tasks to attack, and the scientists believe that the interdisciplinary nature of the project might help to throw light on many problems, so far unresolved. References 1. Dobretsov N. L. On the early stages of life origin and ...

Modified: 25.08.2007
microorganisms , geysers , hot springs , bacteria , genome , evolution , origin of life
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The Planet's Long Youth

... with one another and far different from the regular family trees of higher organisms (Zavarzin, 1999; 2001; 2003). The taxonomic controversy of bacteria prompts scientists to think of horizontal gene transfer and hypothesize some particular web-like evolution of bacteria. Horizontal gene transfer allows relatively fast metabolic changes within a single bacterial cell, whereby genes become redistributed among cells but the total gene pool remains invariable. This may be the reason why the evolution of the bacterial ...

Modified: 30.05.2005
Zavarzin , bacteria , RNA , Earth , biomass , eukaryotes , evolution , evolution of life , genes
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Transgenic Relatives

... metabolism features and transport paths are transferred relatively easily. The acquired DNA segments frequently include plasmids, proviruses, and protein genes facilitating integration of foreign genetic material into a genome. Glossary Archaea (archebacteria) : microbes constituting a separate kingdom of organisms on the evolutionary tree; in cell structure they are similar to typical prokaryotic bacteria but differ from them in the organization of information systems, which bear resemblance to the systems of eukaryotic organisms (fungi, plants, and animals). Vector ...

Modified: 30.09.2004
genome , DNA , gene transfer , genetic information , human , bacteria , evolution
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Microbes: Keeping it Going

... the requirement of element-to-element matter transport. Only a unified enclosed system of functionally complementary organisms can meet these requirements. There is no such a thing in the real world as a universal soldier able to complete any mission. EVOLUTION: FIRST BLOOD The bacterial world was considerably handicapped in that the structure of prokaryotes was incompatible with the ability to consume solid matter. Passage of a solid particle through the membrane would disrupt the cell’s functioning. That is why the prokaryotes ...

Modified: 30.05.2004
organisms , evolution , microorganisms , bacteria , life
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