Yale Discovery Overturns Long-Held “Evolutionary Dead End” Theory - SciTechDaily
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A Yale discovery about a blind cave fish is forcing scientists to rethink one of evolution's most enduring assumptions — that specialization is a one-way street to extinction.
Evolutionary Dead End TheoryAdaptive SpecializationNatural SelectionPhylogenetics
Theory Briefing
- Yale researchers identified Typhlichthys styx, a cave-adapted fish that kept evolving after entering its cave environment, challenging the 'dead end' model.
- The 'evolutionary dead end' theory held that extreme specialization to isolated habitats permanently locks species out of further diversification.
- This find suggests cave species retain evolutionary potential, reshaping how biologists model adaptation, speciation, and long-term survival of niche-dwellers.