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| Description: This figure shows a two-step scenario. The first step selects for self-replication and the second step selects for the ability to synthesize ribonucleotides.
Picture Stats: Views: 2083 Filesize: 78.51kB Height: 493 Width: 850 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=624 Keywords: evolution |