20 Questions
Which factor contributes to the increase in frequency of beneficial alleles in a population?
Mutation
What is the main mechanism that consistently causes adaptive evolution?
Natural selection
What does natural selection act on to bring about adaptive evolution?
Phenotype
Which pattern of banding represents the unbanded Lake Erie Water Snake population?
Pattern D
Where does the Lake Erie Water Snake population with Pattern C banding pattern occur?
Pelee Island
What does the increase in frequency of beneficial alleles lead to?
Increased reproductive advantage
Which of the following is NOT involved in evolution by natural selection?
Gene flow
Where does the Lake Erie Water Snake population with Pattern B banding pattern occur?
Bass Islands
What is the main source of new genetic variations in a population?
Mutation
Which banding pattern represents the highest percentage of individuals in the Lake Erie Water Snake population?
Pattern C
Which factor can result in the bottleneck effect in a population?
Environmental change
What is the bottleneck effect?
The drastic reduction in population size
How can gene flow affect genetic variation among populations?
It reduces genetic variation over time
What can gene flow improve?
Adaptation to local conditions
How can alleles be transferred through gene flow?
Through the movement of both fertile individuals and gametes
Which of the following is NOT a consequence of the bottleneck effect?
Movement of alleles among populations
What can result from a drastic reduction in population size due to a sudden environmental change?
Bottleneck effect
How does the bottleneck effect affect the gene pool of a population?
It reduces the genetic variation in the gene pool
What is gene flow?
The movement of alleles among populations
What is the role of gene flow in the spread of pesticide resistance alleles?
It increases the spread of pesticide resistance alleles
Test your knowledge on the bottleneck effect and its impact on population genetics. Learn about how a sudden reduction in population size can lead to changes in the gene pool.
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