The model of evolution characterized by an uneven tempo of change is known as:
A)phyletic gradualism
B)punctuated equilibrium
C)disequilibrium
D)asymmetrical speciation

Question

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Punctuated equilibrium is the model of evolution characterized by an uneven tempo of change. This theory proposes that most species experience long periods of evolutionary stability punctuated by periods of rapid evolution or speciation. This contrasts with the more gradual model of evolution proposed by phyletic gradualism. The other two options, disequilibrium and asymmetrical speciation, are not commonly used terms in evolutionary biology.

The Model of Evolution Characterized by an Uneven Tempo of Change