tmRNA has been detected in all sequenced bacterial genomes but not those of Archaea and Eucarya. While it is possible that it arose in the common ancestor of all three kingdoms and was later lost ...

Planctomycetes challenge our concept of the bacterial cell and of a prokaryote as a cell structure type, as well as our ideas about origins of the eukaryote nucleus. Planctomycetes Are Important ...

Let us consider the origin of life. Darwin’s theory of evolution is the starting point for thinking about the origin of life.