| 释义 |
punctuated equilibrium
noun
1. : a lineage of evolutionary descent characterized by long periods of stability in characteristics of the organism and short periods of rapid change during which new forms appear especially from small subpopulations of the ancestral form in restricted parts of its geographic range — compare gradualism 1 herein
2. or punctuated equilibrium theory : a theory or model of evolution emphasizing punctuated equilibria |