Tuesday, July 20, 2010

In abiogenesis, when did DNA evolve?

I think you need to distinguish between evolution and the origins of DNA. Evolution is usually a term that is reserved for changes in living organisms, and you are asking a question that goes back to the time before organisms.



In most conceptions of the origins of what are now considered biomolecules proteins and RNA precede DNA. There are different ideas of how the stuff of life started, though it

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