Example sentences for: archaea

How can you use “archaea” in a sentence? Here are some example sentences to help you improve your vocabulary:

  • The most noteworthy distributions are: 1) The majority (96%) of the rRNA introns occur in Eucarya, followed by the Archaea, and the Bacteria.

  • Five distinct levels of taxonomic distribution categories, each including taxa that are successively more distant from S. cerevisiae , were considered: 1 - hits only to ascomycetes, 2 - hits to non-ascomycete fungi, 3 - hits to metazoa and plants, 4 - hits to non-crown-group eukaryotes, 5 - hits to archaea and/or bacteria.

  • This approach had been pioneered in the classical work of Dobzhansky and Sturtevant who used inversions in Drosophila chromosomes to construct an evolutionary tree [ 12 ] . Subsequently, mathematical methods have been developed to calculate rearrangement distances between genomes, and, using these, phylogenetic trees have been built for certain small genomes, such as plant mitochondria and herpesviruses [ 13 14 ] . These approaches, however, are applicable only to genomes that show significant conservation of global gene order, which is manifestly not the case among prokaryotes [ 15 16 17 ] . Even relatively close species such as, for example, Escherichia coli and Haemophilus influenzae, two species of the γ-subdivision of Proteobacteria, retain very little conservation of gene order beyond the operon level (typically, two-to-four genes in a row), and essentially none is detectable among evolutionarily distant bacteria and archaea [ 15 16 18 ] . Very few operons, primarily those coding for physically interacting subunits of multiprotein complexes such as certain ribosomal proteins or RNA-polymerase subunits, are conserved across a wide range of prokaryotic lineages [ 15 16 ] . On the other hand, pairwise comparisons of even distantly related prokaryotic genomes reveal considerable number of shared (predicted) operons, which creates an opportunity for a meaningful comparative analysis [ 19 ] [ 20 21 ] .

  • Thus, the history of this pair of fusion-linked COGs appears to involve horizontal transfer of the fused gene between bacteria and archaea (and possibly also within kingdoms), as well as at least one additional, independent fusion event in bacteria.

  • Most archaea have a distinct version of DHPS that shows relatively low sequence similarity to the bacterial orthologs and contains an additional uncharacterized carboxy-terminal domain.


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