Elliot writes:
This also offers a small explaination to the dinosaurs, because if they had less DNA mutations then they would be less likely to survive a major climate change.
It's worth bearing in mind that any perfecting or optimizing of the dna replication mechanism would have been selected for extremely early in the history of life, if you are correct in saying that more accurate translation is a selective benefit.
It seems likely that some optimal balance between accuracy and "evolvability" would be reached long before the origin of metazoa.
Mick
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