Reversing opinions on Dollo's Law

Rachel Collin1, Maria Pia Miglietta

  • 1Smithsonian Tropical Research Institute, Box 0843-03092, Balboa, Ancon, Republic of Panama. collinr@si.edu

Summary

Dollo's Law, the irreversibility of complex evolutionary traits, is being challenged. New research suggests that lost features like digits and wings can reappear, questioning the strictness of this biological principle.

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