Podcast
Questions and Answers
How does stabilizing selection impact the phenotypic distribution of a population?
How does stabilizing selection impact the phenotypic distribution of a population?
- It reduces genetic variation by favoring the average phenotype. (correct)
- It favors extreme phenotypes, leading to a bimodal distribution.
- It increases genetic variation by promoting multiple new phenotypes.
- It causes a shift in the average phenotype towards one extreme.
Which scenario would LEAST likely lead to a significant deviation from Hardy-Weinberg equilibrium?
Which scenario would LEAST likely lead to a significant deviation from Hardy-Weinberg equilibrium?
- A large flock of birds colonizes a new island with limited resources.
- A small population of turtles experiences non-random mating due to size differences.
- A population of plants undergoes significant genetic mutations due to radiation exposure.
- A very large population of fish reproduces sexually with random mate selection. (correct)
Which of the following evolutionary mechanisms is most likely to decrease genetic variation within a small, isolated population?
Which of the following evolutionary mechanisms is most likely to decrease genetic variation within a small, isolated population?
- Genetic drift (correct)
- Gene flow
- Mutation
- Natural selection
How does temporal isolation contribute to speciation?
How does temporal isolation contribute to speciation?
How does the concept of 'half-life' relate to determining the age of fossils and understanding evolutionary timelines?
How does the concept of 'half-life' relate to determining the age of fossils and understanding evolutionary timelines?
How did Darwin's observations of Galapagos finches contribute to his theory of evolution?
How did Darwin's observations of Galapagos finches contribute to his theory of evolution?
What is the fundamental difference between artificial selection and natural selection?
What is the fundamental difference between artificial selection and natural selection?
Which statement best describes the concept of 'fitness' in the context of natural selection?
Which statement best describes the concept of 'fitness' in the context of natural selection?
How does biogeography provide evidence for evolution?
How does biogeography provide evidence for evolution?
What does a large gene pool indicate about a population's evolutionary potential?
What does a large gene pool indicate about a population's evolutionary potential?
Flashcards
Half Life
Half Life
The time taken for half of a substance to decay or be eliminated.
Mutation
Mutation
A change in the DNA sequence of an organism, which can lead to new traits.
Stabilizing Selection
Stabilizing Selection
Natural selection that favors average phenotypes and eliminates extremes.
Genetic Drift
Genetic Drift
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Hardy-Weinberg Principle
Hardy-Weinberg Principle
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Darwin
Darwin
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Natural selection
Natural selection
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Fitness
Fitness
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Vestigial structures
Vestigial structures
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Artificial selection
Artificial selection
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Study Notes
Evolution Exam Study Guide
- Key Concepts: Half-life, mutation, stabilizing selection, genetic drift, Hardy-Weinberg principle, geographic isolation, temporal isolation, founder's effect.
Darwin's Views on Fossil Records
- Study Darwin's perspective on fossil records.
Importance of Galapagos Finches
- Understand the significance of Galapagos finches in Darwin's research.
Founder's Effect Representation
- Analyze how Galapagos finches exemplify the founder's effect.
Hardy-Weinberg Principle Requirements
- Define the conditions for the Hardy-Weinberg principle to apply.
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