More on Introns/Plasmids: <br><br>On another bb a
poster brought to my attention that Archaeabacterias are
NOT bacterias and that introns were just found in
some Archaea, therefore my idea of methanogens as the
alpha and omega was not substantiated. I think he had
this kind of paper in mind:
> <br><br>VOLUME 30 ISSUE 4 <br><br>"RNomics in
Archaea reveals a further link between splicing of
archaeal introns and rRNA processing Thean Hock Tang,
Timofey S. Rozhdestvensky, B�atrice Clouet d'Orval,
Marie-Line Bortolin, Harald Huber, Bruno Charpentier,
Christiane Branlant, Jean-Pierre Bachellerie, J�rgen Brosius
and Alexander H�ttenhofer "<br><br>Here are some
links. I agree methanogens are archeabacteria and are
therefore not related to bacteria. However, they share with
bacteria genetic characteristics such that they generally
don't have introns.
> <br><br>"Archaea Makes Three <br><br>In the
summer of 1996 a large collaboration of scientists
deciphered the full sequence of units, or nucleotides, in
every gene of Methanococcus jannaschii--a
methane-producing extremophile that thrives at temperatures near 85
degrees Celsius. The results strikingly confirmed the
once ridiculed proposal that life consists of three
major evolutionary lineages, not the two that have been
routinely described in textbooks (see chart below).
> <br><br>"III. A. The Archaea have only recently
been recognized as a group. 2. DNA is structured much
like bacterial DNA. <br><br>III. D. 1 Ni is required
"<br><br>Do methanogens have plasmids? No.
> <br><br>See 5 b.
> <br><br>"Archaeal organisms are characterized by
a fascinating mixture of features from the other
two domains. In particular, the replication,
recombination, transcription and translation proteins are
homologous to those of eukaryotes, despite the fact that the
archaea are prokaryotes. The archaea also display unique
features, including distinct rRNA motifs, ether-linked
membrane lipids, unique cell envelope components, and the
ability of certain genera to produce methane.
"<br><br>Comment: <br><br>Old lines and deep lines--mean little
evolutionary change. And so far no discovery of a more complex
way to evolve. Why? My answer: If a creature faces no
selective pressures, its only fight is with itself. Namely,
which can reproduce faster and more effectively given
the chemistry for reproduction. Therefore, introns
slow replication and must go. <br><br>The fact that
near relatives of the methanogens are not part of Gaia
and have evolved genetic complexity is not telling,
because it may simply mean that some of the evolution of
the Archaeal organisms was away from Gaia where
selective pressures occurred. <br><br>To me the
mitochrondia of complex life is interesting because the
metabolism is chemically connected ultimately to these
methanogens requiring H2 and CO2. More indirect evidence of
alpha and omega. It's not SO2 or some other chemical.
So when you see the Carbon Clubs promoting "sinks"
of CO2 to greenery, laugh for me--they just don't
get it. Greenery rots.