Gradualism vs Punctuated Equilibrium (HSC SSCE Biology): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
Which scientist originally proposed the evolutionary pattern known as gradualism?
Which scientist originally proposed the evolutionary pattern known as gradualism?
Charles Darwin
What does gradualism predict we should find in the fossil record?
What does gradualism predict we should find in the fossil record?
Intermediate or transitional forms
Which organism provides strong fossil evidence supporting gradualism?
Which organism provides strong fossil evidence supporting gradualism?
Trilobites
Who developed the theory of punctuated equilibrium in the 1970s?
Who developed the theory of punctuated equilibrium in the 1970s?
Gould and Eldridge
How long have horseshoe crabs remained almost unchanged, demonstrating punctuated equilibrium?
How long have horseshoe crabs remained almost unchanged, demonstrating punctuated equilibrium?
445 million years
What does punctuated equilibrium challenge about Darwin's theory?
What does punctuated equilibrium challenge about Darwin's theory?
Rate and pattern of change
Why are transitional fossils typically absent in punctuated equilibrium?
Why are transitional fossils typically absent in punctuated equilibrium?
Small populations & rapid change
What characterizes the stasis phase in punctuated equilibrium?
What characterizes the stasis phase in punctuated equilibrium?
Little to no evolutionary change
How does speciation pattern differ between the two models?
How does speciation pattern differ between the two models?
Gradualism linear, equilibrium branched
Can both gradualism and punctuated equilibrium occur in the same species?
Can both gradualism and punctuated equilibrium occur in the same species?
Yes, at different times