progenitor gene

higginss at VAX.CS.HSCSYR.EDU higginss at VAX.CS.HSCSYR.EDU
Thu Jun 12 16:35:49 EST 1997



Thanks for the response,
As for an ancient organism (along the lines of living fossils), is there 
an extant bacterial species or group that demonstrates characteristic 
similar to those that can be identified in the fossil record as 
"progenitor life forms" (eg. cyanobateria and stromatolites)?

S.Higgins 


On Wed, 11 Jun 1997, Alain Bernot wrote:

> 
> thanks to the availbility of complete genome sequences, some authors have tried
> to identify orthologues genes that exist in different groups of living species.
> these genes could represent a minimal set of "primitive genes" which have
> existed at a early stage of life.
> 
> see for instance :
> mushegian & koonin, pnas 93, 10268-73
> maniloff, pnas 93, 10004-6
> clayton et al, nature 387, 459 (news)
> pennisi, science 272, 1098 (news)
> 
> like francois jeanmougin, i think there is no living "ancient organism"
> 
> 
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