What is the main difference between gradualism and punctuated equilibrium in evolutionary theory?

Gradualism suggests slow and steady change, while punctuated equilibrium suggests rapid change followed by stability.

Both theories suggest slow and steady change.

Both theories suggest rapid change followed by stability.

Gradualism suggests rapid change followed by stability, while punctuated equilibrium suggests slow and steady change.

Which of the following scenarios best illustrates punctuated equilibrium?

A species of fish remains unchanged for millions of years, then rapidly evolves new traits in a few thousand years.

A species of insects shows no significant changes over a long period.

A species of birds gradually changes its beak size over millions of years.

A species of mammals slowly adapts to a changing environment over a long period.

How does the fossil record support the theory of punctuated equilibrium?

The fossil record shows long periods of stability interrupted by short periods of rapid change.

The fossil record shows a continuous and gradual change in species over time.

The fossil record shows no evidence of change in species over time.

The fossil record shows that all species evolve at the same rate.

Which of the following is an example of the founder effect?

A group of birds is blown by a storm to a new island, where they establish a new population.

A volcano erupts, wiping out most of a population, leaving only a few survivors.

A population of rabbits evolves larger ears over generations due to predation pressure.

A mutation occurs in a single individual, leading to a new trait in the population.

Evolution Review Practice Questions Quiz

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MULTIPLE CHOICE QUESTION

30 sec • 5 pts

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MULTIPLE CHOICE QUESTION

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MULTIPLE CHOICE QUESTION

30 sec • 5 pts

3. After examining the fossil record, scientists have determined that scorpions today are much smaller than their extinct ancestors. For example, Jaekelopterus rhenaniae, a giant scorpion species that lived 255 million to 460 million years ago, was 2.5 meters long. Which of the following conclusions is supported by this information?

Scorpions living today have increased their numbers since they first appeared.

Scorpions in the fossil record are smaller than their descendants are.

Scorpions have changed as a result of natural selection.

Scorpions do not appear in their original state in the fossil record.

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MULTIPLE CHOICE QUESTION

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MULTIPLE CHOICE QUESTION

30 sec • 5 pts

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It increases opportunities for offspring to compete for limited resources.

It increases the probability that some offspring will survive long enough to reproduce

It increases the probability that moving water will promote gene flow from one population to another.

It increases the chance of the recombination of alleles, leading to genetic drift in the population.

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MULTIPLE CHOICE QUESTION

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MULTIPLE CHOICE QUESTION

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