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RNA world hypothesis
Information
The RNA world hypothesis proposes that self-replicating ribonucleic acid (RNA) molecules were precursors to current life, which is based on deoxyribonucleic acid (DNA), RNA and proteins. It is generally accepted that current life on Earth descends from an RNA world,although RNA-based life may not have been the first life to exist.
RNA stores genetic information like DNA, and catalyzes chemical reactions like an enzyme protein. It may, therefore, have played a major step in the evolution of cellular life
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Latest Activity: Nov 7
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Nice Comment
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Comment was by Kurt Neuleuf on November 7, 2022 at 5:22am
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Watching the video, I get more questions, The R chains added on to the amino acids are supposed to be old no longer used??
How then is it that the obsolete R Chain are the very ones that form the 9 essential protiens?
Are the 9 essential protiens not essentioal after all due to the obsolete R chain?
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It has always puzzled me the origin of the 3 RNA's. (the copier, the messenger,&the builder)
The chicken and egg scenerio.
If DNA evolved was first, then how did it replicate and make the "product" read, cell?
Did they evolve concurrently??
If so, then evelution is very intelligent.
If evelution is not intelligent and occurred through chance, then life is far older that we are capable of calculation. the odds of everything coming together???
I wish I could offer at least a partial answer.
I seek answers
I ponder, I research,
I get no where.
For every answer I get a whole swag of more questions.
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Comment was by ali aslan on August 14, 2014 at 5:01pm
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i think The RNA world hypothesis needs further evidence in order to complete a sound molecular biological theory of the origin of life on Earth. You can also watch the following video nobel prize awarded scientist Jack Szostak :
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Comment was by Stephen Brodie on August 14, 2014 at 4:41pm
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Watched the Sidney Altman lecture very interesting. thanks Ali for the heads up for the subject
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