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The Planet's Long Youth

... advent of bacteria. The question which bacteria came first remains controversial. It was hypothesized that some simple ancestral form, protobacteria, gave rise simultaneously to the independent forms of prokaryotes (bacteria, or eubacteria, and archaebacteria) and eukaryotes (Pace, 1997). There is ample evidence that eukaryotes postdated prokaryotes, but the place of archaebacteria is still being debated. Archaebacteria were attributed to a dead end of the evolution which finally occupied habitats of extremely ...

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