Podcast
Questions and Answers
Which evolutionary force is most likely to reduce genetic variation in a small population?
Which evolutionary force is most likely to reduce genetic variation in a small population?
- Mutation
- Stabilizing selection
- Geographic isolation
- Genetic drift (correct)
What is the significance of the Galapagos finches in the context of Darwin's research and evolutionary biology?
What is the significance of the Galapagos finches in the context of Darwin's research and evolutionary biology?
- They demonstrated the principle of temporal isolation.
- They provided evidence for the Hardy-Weinberg principle.
- They showed how half-life can predict evolutionary changes.
- They exemplified adaptive radiation and natural selection based on different food sources. (correct)
In which scenario is the founder effect most likely to lead to a significant change in allele frequencies, compared to the original population?
In which scenario is the founder effect most likely to lead to a significant change in allele frequencies, compared to the original population?
- The population experiences stabilizing selection.
- The population adheres strictly to the Hardy-Weinberg principle.
- A large group of individuals migrates to a new area.
- A few individuals colonize a remote island. (correct)
Which condition, if violated, would most directly cause a population to deviate from Hardy-Weinberg equilibrium?
Which condition, if violated, would most directly cause a population to deviate from Hardy-Weinberg equilibrium?
How does geographic isolation contribute to the process of speciation?
How does geographic isolation contribute to the process of speciation?
Which observation about Galapagos finches MOST directly supports Darwin's concept of natural selection?
Which observation about Galapagos finches MOST directly supports Darwin's concept of natural selection?
A population of butterflies exhibits variation in wing color, ranging from light to dark. Birds prey on these butterflies, and butterflies with lighter wings are easier for the birds to spot in the forest. Over time, what is the MOST likely outcome in this butterfly population?
A population of butterflies exhibits variation in wing color, ranging from light to dark. Birds prey on these butterflies, and butterflies with lighter wings are easier for the birds to spot in the forest. Over time, what is the MOST likely outcome in this butterfly population?
Which scenario BEST exemplifies artificial selection?
Which scenario BEST exemplifies artificial selection?
A snake has tiny, non-functional pelvic bones. These bones are MOST accurately classified as:
A snake has tiny, non-functional pelvic bones. These bones are MOST accurately classified as:
Two populations of frogs live in the same geographic area but can no longer interbreed because one population breeds in the spring and the other breeds in the fall. This is an example of what?
Two populations of frogs live in the same geographic area but can no longer interbreed because one population breeds in the spring and the other breeds in the fall. This is an example of what?
Flashcards
Half Life
Half Life
The time required for half of a substance to decay or transform.
Mutation
Mutation
A change in the DNA sequence that can lead to new traits.
Stabilizing Selection
Stabilizing Selection
Natural selection that favors average traits and reduces extremes.
Genetic Drift
Genetic Drift
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Hardy-Weinberg Principle
Hardy-Weinberg Principle
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Natural Selection
Natural Selection
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Darwin
Darwin
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Galapagos Finches
Galapagos Finches
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Homologous Structures
Homologous Structures
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Fitness
Fitness
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Study Notes
Evolution Exam Study Guide
- Concepts to Review: Half-life, mutation, stabilizing selection, genetic drift, Hardy-Weinberg principle, geographic isolation, temporal isolation, founders effect
Key Questions to Consider
- What were Darwin's views on fossil records?
- Why were the Galapagos finches so important in Darwin's research?
- Explain how the Galapagos finches represent the founders effect?
- What are the requirements for the Hardy-Weinberg principle?
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