What Caused the Sudden Rise of New Species?

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The discussion centers on a paper exploring the hypothesis of sudden origins of species, highlighting the need for further testing of its claims. Key points include the idea that an organism's features may not necessarily be adaptations to specific environments, suggesting a separation between "evolution" and "adaptation." Additionally, the paper posits that the absence of DNA homeostasis, rather than a consistent mutation rate or natural selection, allows for evolution to occur. While the proposed mechanism is noted as potentially innovative, the critique points out that the paper inadequately addresses the role of various environmental factors, focusing primarily on temperature-related mutations. Overall, the paper is regarded as an interesting read that warrants further exploration.
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I thought it was quite interesting and well written. Much needs to be tested. A couple of quotes I really liked:

{If an organisms features are not adaptations to specific environmental circumstances, we can decouple "evolution" and "adaptation".}

and

{The lack of something (DNA homeostasis), rather than a persistent mechanism (constant mutation rate or natural selection), permits "evolution"...}

Their model isn't wholly novel but the specific mechanism they propose might be. Still, I don't think it covers everything, e.g. they don't do a very good job of explaining how environmental factors, other than temperature, could provoke/overwhelm the HSR. They mention other conditions, but only really explain temperature-invoked mutations.

Overall a nice read, 2 thumbs up!
 
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