But the nucleobases found in the meteorite
are of BOTH optical isomers -- right- and left-
handed molecules -- or so the video says. if
they were from terrestrial contamination,
they would be only the Earthly orientation.
The point is that not only amino acids are being
produced in space a-biotically but so are common
nucleobases, ready to be assembled.
It's not like getting DNA from space --- it's like
getting a box of pre-fitted ladder rungs so you
can build your own ladder.
Sterling K. Webb
----------------------------------------------------------------
----- Original Message -----
From: "dorifry" <dori...@embarqmail.com>
To: <meteorite-list@meteoritecentral.com>
Sent: Tuesday, August 09, 2011 1:49 PM
Subject: [meteorite-list] More evidence of building blocks of DNA
inmeteorites
Hello fellow Listerians:
It's hype, just like the sketchy arsenic-based life forms and the
imaginary Martian fossils. First off when you say DNA, most people
think of a biotic double helix just like we have in the nuclei of our
cells. Components of DNA is an entirely different thing, like maybe a
little bit of a rung from the DNA ladder. And the same nucleobases
plus some hypoxanthine and xanthine were found in the surrounding ice
and soil samples near the other meteorites. Sounds a lot like
terrestrial contamination. Maybe the analog compounds were present or
created at impact, but it sure sounds like the other stuff seeped in
while the meteorites lay there for how long? I mean c'mon the exact
same compounds? What are the chances of that? They've got to stop
crying wolf all the time, it's getting old.
Phil Whitmer
Joshua Tree Earth& Space Museum
______________________________________________
Visit the Archives at
http://www.meteoritecentral.com/mailing-list-archives.html
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list
______________________________________________
Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list
