The concept of a minimal cell is discussed freom the viewpoint of comparative genomics. Analysis of published DNA content values determined for 641 different archaeal and bacterial species by pulsed field gel electrophoresis ...

The possibility of a hightemperature origin of life has gained support based on indirect evidence of a hot. early Earth and on the basal position of hyperthermophilic orizanisms in rRNAbased phylogenies. However, although ...

Quantitative estimates of the gene complement of the last common ancestor of all extant organisms, that is, the cenancestor, may be hindered by ancient horizontal gene transfer events and polyphyletic gene losses, as well ...