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"
_______________________________________________________________________________
Alain Bernot | Phone : +33-1-69-47-25-50 |
Genethon | Fax : +33-1-60-77-86-98 |
Human Genome Research Center | e-mail: bernot at genethon.fr |
1, Rue de l'Internationale BP 60 | http://www.genethon.fr |
91002 Evry, France | |
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