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Evolution, lack of mechanism

Discussion of everything related to the Theory of Evolution.

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Evolution, lack of mechanism

Postby fscottdahlgren » Tue Jun 12, 2007 5:10 am

I remember reading an article that looked at the melting temperature of tRNA as a function of surface water temperature over the past few billion years. That has been some time, and I have yet to see another quantitative approach to evolution. Does anyone know of a group that studies evolution, without evoking the all powerful arsenal of selections?
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Postby mith » Tue Jun 12, 2007 3:18 pm

Melting temperature of tRNA?
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Postby fscottdahlgren » Tue Jun 12, 2007 3:27 pm

http://www.mso.anu.edu.au/~charley/pape ... milton.pdf

Tm refers to the temperature where the energy of the functional molecule is equal to the energy of the scrambled molecule.
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Postby david23 » Tue Jun 12, 2007 7:09 pm

whether the Tm of tRNA changes or not will not effect and is not attributed to evolution.
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Postby mith » Wed Jun 13, 2007 2:31 am

This paper is weird, it's only got 2 sections....usually there's a data, method and then a discussion. Was this published anywhere?
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Postby blcr11 » Wed Jun 13, 2007 3:54 am

It looks like it may be a presentation at a conference. Whether the procedings are "published" or simply posted, I can't say. Near as I can tell, the methods used by the authors is to restate others--not that you can't do that, but this is not what I would consider a formal publication. They are talking about ribosomal RNA, though, not transfer RNA, at least that's what all the phylogeny is based on.
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Postby wbla3335 » Wed Jun 13, 2007 1:02 pm

fscottdahlgren,

If you're interested in this sort of thing, read Singularities: Landmarks on the Pathways of Life, by Christian De Duve. Mechanisms galore, with and without selection.
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