Article
On the origin of prokaryotic species.
Genome research - 1 May 2009
Doolittle W Ford, Zhaxybayeva Olga
Abstract excerpt
The notion that all prokaryotes belong to genomically and phenomically cohesive clusters that we might legitimately call "species" is a contentious one. At issue are (1) whether such clusters actually exist; (2) what species definition might most reliably identify them, if they do; and (3) what species concept -- by which is meant a genetic and ecological theory of speciation -- might best explain species...
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