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  Topic: Younger cyanobacteria, Molecular analysis reshapes phylogeny< Next Oldest | Next Newest >  
Wesley R. Elsberry

Posts: 4802
Joined: May 2002

(Permalink) Posted: Oct. 25 2002,13:53   

Astrobiology Update: Oxygen-making Microbes Came Last, Not first (SpaceRef.Com, 2002/10/25)

"What paleontologists and geologists have had to do is reconstruct evolutionary events because biologists haven't had a very good evolutionary tree of bacteria," says Blank. To get a better family tree, Blank took advantage of growing genome archives and studied 38 genes in the whole gene sequences of 53 species of extant bacteria, including Cyanobacteria. By mapping out the rates of change in the slowest-changing genes, Blank was able to generate a bacterial evolutionary history that shows cyanobacteria branching off last.

Edited by Wesley R. Elsberry on Oct. 25 2002,13:53

"You can't teach an old dogma new tricks." - Dorothy Parker

  0 replies since Oct. 25 2002,13:53 < Next Oldest | Next Newest >  


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