Freeman Dyson:
ORIGINS OF LIFE (Cambridge Univ Press, 1999)

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(Copyright © 1999 Piero Scaruffi | Legal restrictions - Termini d'uso )

The American physicist Freeman Dyson thinks that life had a double origin, since it is unlikely that both metabolism and replication occurred at the same time in one of the primitive organic molecules. It is more reasonable to assume that life "began" twice, with organisms capable of reproduction and with (separate) organisms capable of metabolism, and only later there arose a mixture of the two: organisms capable of both reproduction and metabolism.

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