progenitor gene

Alain Bernot bernot at sansgene.genethon.fr
Fri Jun 27 17:25:30 EST 1997


let me propose an example of "ancient extant organism" : in pnas 91, 6743-6750,
knoll suggests that the acritarch have almost not evolved for about 2000 my. but
(i) this organism is eukaryotic, and (ii) a phenotypic statis doesnt imply a
genetic stasis. i guess this last point represents the main difficulty for
proposing an "ancient extant organism".


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