Dollo's law of irreversibility


Also found in: Wikipedia.

Dollo's law of irreversibility

a principle formulated by the Belgian palaeontologist L. Dollo, stating that a structure once lost in evolution cannot be regained.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
Mentioned in ?