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Journey to the Invisible World

... whose genome should have conserved their archaic features. Furthermore, using the reduction approach it would be possible to draw, through the comparison of genomes or their parts, a “universal tree of life” reflecting the philogenetic kinship of microorganisms. However, it is clear from the data we have that the bacteria, unlike higher organisms, cannot be systemized in the form of a “genealogical tree”. The “tree” of microorganisms first looked like overgrown bushes and by now has turned into something reminding a flower belonging to the Compositae family ...

Modified: 25.08.2007
microorganisms , geysers , hot springs , bacteria , genome , evolution , origin of life
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Microbes: Keeping it Going

... somewhat unreliable. At the dawn of life on Earth, only a prokaryotic community existed and the whole biosphere was created by bacteria. Any later event could only be a modification made to the system that had been crafted by those invisible things when ... ... free-living organisms are fueled by redox reactions. The most primitive microbial community is the one of hydrogenotrophic microorganisms . The reducing agent they use is hydrogen, which is produced by water reacting with overheated rock, that is at ...

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