But when his team compared DNA sequences from the bacteria in the rock samples with those available in databases, he discovered an entire microbial ecosystem consisting of a wide variety
of both archaebacteria and eubacteria, common «modern» bacteria that normally take up residence in lush places such as cheese and humans.
Spear expected to find species
of archaebacteria, the oldest living organisms on Earth, because they're known to thrive in such extreme conditions.
«The nucleocytoplasmic component of the eukaryotic cell branches off very early in the evolutionary radiation
of the archaebacteria.
There is an active dispute as to whether
some of the archaebacteria are more closely related to the eukaryotic nucleocytoplasm than are others (proponents of the differing views are James Lake of the University of California at Los Angeles and Carl Woese of the University of Illinois at Urbana - Champaign).
Not exact matches
Of the 150 eubacteria species found, nearly a third had not previously been catalogued, likewise for two - thirds of the 90 archaebacteria species in the sample
Of the 150 eubacteria species found, nearly a third had not previously been catalogued, likewise for two - thirds
of the 90 archaebacteria species in the sample
of the 90
archaebacteria species in the samples.
This discovery means there are not two lines
of descent
of life but three: the
archaebacteria, the true bacteria and the eukaryotes
They determined the structure
of the fly protein's PAZ domain and the
archaebacteria full - length protein.