Setting the Stage: The History, Chemistry, and Geobiology behind RNA
Steven A. Benner, Hyo-Joong Kim and Zunyi Yang
-Author Affiliations
Foundation for Applied Molecular Evolution, Gainesville, Florida 32601
Correspondence: sbenner@ffame.org
SUMMARY
No community-accepted scientific methods are available today to guide studies on what role RNA played in the origin and early evolution of life on Earth. Further, a definition-theory for life is needed to develop hypotheses relating to the “RNA First” model for the origin of life. Four approaches are currently at various stages of development of such a definition-theory to guide these studies. These are (a) paleogenetics, in which inferences about the structure of past life are drawn from the structure of present life; (b) prebiotic chemistry, in which hypotheses with experimental support are sought that get RNA from organic and inorganic species possibly present on early Earth; (c) exploration, hoping to encounter life independent of terran life, which might contain RNA; and (d) synthetic biology, in which laboratories attempt to reproduce biological behavior with unnatural chemical systems.
Copyright © 2010 Cold Spring Harbor Laboratory Press; all rights reserved
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NOTA IMPERTINENTE DESTE BLOGGER:
"No community-accepted scientific methods are available today to guide studies on what role RNA played in the origin and early evolution of life on Earth. Further, a definition-theory for life is needed to develop hypotheses relating to the “RNA First” model for the origin of life."
Traduzindo em graúdos: nenhum cientista sabe como se deu a origem da vida.
Alô MEC/SEMTEC/PNLEM: É bom que os autores de livros didáticos de Biologia abordem a questão da evolução química -- a ciência não sabe a origem da vida. Traduzindo em miúdos: o Mysterium tremendum continua Mysterium tremendum, e as especulações químicas transformativas de Oparin e Miller-Urey já deveriam ter sido lançadas na lata do lixo da História da Ciência há muito tempo.
Estamos de olho nos livros-texto de Biologia e Química aprovados pelo MEC/SEMTEC/PNLEM (Eles lêem assiduamente este blog!!!).
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