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A comment on Mimicking an impact on Earth’s early atmosphere yields all 4 RNA bases. Parent comment

Re:Mimicking an impact on Earth’s early atmosphere yields al... by hamandcheese on Thursday April 13, 2017 @03:31PM (#14110219)
Why does it necessarily have to be one or the other? Is it not plausible that there were replicators and metabolizers forming in tandem?
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Re:Mimicking an impact on Earth’s early atmosphere yields al... by jschwartzi on Thursday April 13, 2017 @04:50PM (#14110821)
And then at some point they got together and both replicated and metabolized.
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