On punctuated equilibria


Abstract
They are correct that punctuated equilibria apply to sexually reproducing organisms and that morphological evolutionary change is regarded as largely (if not exclusively) correlated with speciation events. However, they err in suggesting that we attribute stasis strictly to "developmental constraints," which represent only one of a set of possible mechanisms that we have suggested for the causes of stasis. Others include habitat tracking and the internal structure of species themselves [for example, (2)].
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Resurrecting Biological Essentialism.Michael Devitt - 2008 - Philosophy of Science 75 (3):344-382.
Towards a Unified Science of Cultural Evolution.Alex Mesoudi, Andrew Whiten & Kevin N. Laland - 2006 - Behavioral and Brain Sciences 29 (4):329-347.

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