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The biggest thing in ecology right now is niche construction theory. It's the realization that organisms don't just respond to their environment, but also shape
by culi 5y ago
The biggest thing in ecology right now is niche construction theory. It's the realization that organisms don't just respond to their environment, but also shape it and reproduce it
I think it's high time for the equivalent perspective to reach evolutionary molecular biology and realize that organisms aren't just gonna sit idly by and wait for the random process of mutation to let them adapt. As shown by the recent studies on the prevalence of genes being shared across animals,[0] there's clearly many mechanisms of action missing from our molecular analysis toolbox. One recent finding was the discovery of epigenetic inheritance. If epigenetics allows organisms to adapt to environments in their lifetimes and these adaptations can, in some capacity, be passed down. In addition, we've already shown a number of factors to increase the rates of mutation. Given these findings, I don't think it's far-fetched to imagine some level of "~~niche~~[gene] construction" happening at the molecular level
[0] https://www.quantamagazine.org/dna-jumps-between-animal-species-no-one-knows-how-often-20210609/ https://www.quantamagazine.org/dna-jumps-between-animal-spec...
- aspenmayer 5y agoLamarck and Lysenko got a raw deal. https://en.wikipedia.org/wiki/Lamarckism https://en.wikipedia.org/wiki/Lamarckism https://en.wikipedia.org/wiki/Lysenkoism https://en.wikipedia.org/wiki/Lysenkoism
- biorach 5y agoLysenko was a fraud and a disgusting human being who cheerfully saw scientists condemned to death to further his take science. Lamarck's theories were unsupported by the evidence available at the time. Current research indicates that inheritance of acquired traits, if it does exist, is in its details quite unlike what was described in Lamarck's theories. So no, neither got a raw deal.
- aspenmayer 5y agoI was speaking more to the heritability of acquired traits, as that was the context of the discussion. I’m open to learning more about their negative aspects also.
- alisonkisk 5y ago
- biorach 5y agoExcellent reply. And absolutely fascinating research. Thanks.