Re: Non-nucleotide based life

Sandeep Pulla schrieb:
Given sufficient time, can non-nucleotide-based "life"
evolve on earth, perhaps based on variants of nucleotides
(sort of like the way uracil replaces thymine in RNA),
or perhaps based on completely different molecules that
have the "necessary" characteristics such as the ability
to polymerize & therefore store information, pair with
complementary molecules & self-replicate, and catalyze
protein-like molecules?

For example, there's tPNA as an alternative to DNA.
Some links:

http://www.iran-daily.com/1388/3424/html/science.htm
http://bill.srnr.arizona.edu/classes/182/EarlyEarth/BackTwoBases.htm
http://www.sciencedaily.com/releases/2002/12/021219065007.htm
http://nextbigfuture.com/2008/04/gna-glycerol-nucleic-acid-synthetic.html
http://thefutureofthings.com/news/1212/scientists-create-synthesized-dna.html
http://www.scienceblog.com/cms/fake-dna-used-build-nanotech-16152.html
http://www.scienceagogo.com/news/20060904023041data_trunc_sys.shtml
http://www.livescience.com/strangenews/090214-weird-life.html
http://rss.xinhuanet.com/newsc/english/2008-07/08/content_8510010.htm
http://www.newscientist.com/article/mg19926644.300-four-artificial-new-letters-for-the-dna-alphabet.html
http://www.thefreelibrary.com/Do-it-yourself:+virus+recreated+from+synthetic+DNA.+(Science+News...-a089815129

Regards,
Joachim

.

Relevant Pages

  • Re: Non-nucleotide based life
    ... uracil replaces thymine in RNA), ... different molecules that have the "necessary" characteristics such as ...
    (sci.bio.evolution)
  • Re: Non-nucleotide based life
    ... uracil replaces thymine in RNA), ... different molecules that have the "necessary" characteristics such as ...
    (sci.bio.evolution)
  • Non-nucleotide based life
    ... uracil replaces thymine in RNA), ... different molecules that have the "necessary" characteristics such as ...
    (sci.bio.evolution)
  • Re: Non-nucleotide based life
    ... uracil replaces thymine in RNA), ... different molecules that have the "necessary" characteristics such as ... and quite fascinating research. ...
    (sci.bio.evolution)
  • Re: The story of the golfers without clubs and the toy knive that need to be sharpened..
    ... Better chose a simpler molecules explanation that, by the way, doesn't ... How did that fi rst self-replicating RNA ... "..RNA's building blocks, nucleotides, ... Ok, well, we need FIRST to know how life started on earth: ...
    (talk.origins)