Punctuated Equilibrium

Definition

Punctuated equilibrium is a theory in evolutionary biology which proposes that most species will exhibit little net evolutionary change for most of their geological history, remaining in an extended state called stasis. When significant evolutionary change occurs, the theory proposes that it is generally restricted to rare and rapid events of branching speciation.

Related terms

Stasis: This term refers to periods in an organism's evolution where there is little to no significant change.

Speciation: This is the process by which new and distinct species are formed through evolution.

Evolutionary Biology: This branch of biology studies all aspects of the origin and descent of species over time, as well as their current forms, behavior and environment.