----- Original Message -----
From: "David Campbell" <bivalve@email.unc.edu>
To: <asa@calvin.edu>
Sent: Friday, April 28, 2000 1:47 PM
Subject: early thermophiles
> >"Phylogenetic trees of life typically reveal that the extant
> >hyperthermophilic bacteria and archaeal species, which inhabit
environments
> >of extreme temeperatures, have some of the deepest and oldest branches,
and
> >it is consequently a widely endorsed textbook view that the common
ancestor
> >of life was adapted to hot conditions.
> > "The proportion of all nucleotides that are either guanine or cytosine
(the
> >G+C content) of ribosomal RNA is a reliable indicator of the
environmental
> >temperature of an organism, so an estimate of the G+C content of the root
of
> >the tree of life provides evidence for the environmental conditions that
> >prevailed when the common ancestor to life arose." Mark Pagel, "Inferring
> >the Historical Patterns of Biological Evolution," Nature,
401(1999):877-884,
> >p.879
>
> Some of these results have been questioned as possibly artifacts of the
> analytical techniques. There does not appear to be a consensus.
>
A consensus on what? The G+C ratio or what?
glenn
Foundation, Fall and Flood
Adam, Apes and Anthropology
http://www.flash.net/~mortongr/dmd.htm
Lots of information on creation/evolution
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