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Multiple Choice
Which component of speciation would be least likely to be a part of punctuated equilibrium?
A
Sudden appearance of new species
B
Gradual accumulation of small genetic changes
C
Long periods of stasis
D
Rapid bursts of evolutionary change
Verified step by step guidance
1
Understand the concept of punctuated equilibrium: It is a theory in evolutionary biology which proposes that species experience long periods of stasis (little to no evolutionary change) punctuated by short, rapid bursts of significant change.
Identify the components of speciation mentioned in the problem: 1) Sudden appearance of new species, 2) Gradual accumulation of small genetic changes, 3) Long periods of stasis, and 4) Rapid bursts of evolutionary change.
Analyze each component in the context of punctuated equilibrium: The theory emphasizes rapid changes and long periods of stasis, rather than slow, gradual changes.
Consider which component does not align with the theory: Gradual accumulation of small genetic changes is more characteristic of the gradualism model, not punctuated equilibrium.
Conclude that the component least likely to be part of punctuated equilibrium is the gradual accumulation of small genetic changes, as it contradicts the theory's emphasis on rapid change and stasis.