What is the effect of natural selection on single-gene traits?
G 11 - 18.2 Evolution as Genetic Change

Quiz
•
Biology
•
11th Grade
•
Easy
Mahmoud Baghdady
Used 1+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
It only affects polygenic traits.
It causes no change in allele frequency.
It increases the frequency of all phenotypes.
It changes the frequency of alternative phenotypes over time.
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What is genetic drift?
A process that increases genetic variation.
A change in allele frequency due to random sampling.
A type of natural selection.
A method of artificial selection.
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Which of the following describes stabilizing selection?
Equal fitness across all phenotypes.
No change in phenotype frequencies.
Higher fitness for individuals at the center of the curve.
Higher fitness at the extremes of the phenotype curve.
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What is the bottleneck effect?
A change in allele frequency due to migration.
A reduction in population size leading to a change in allele frequency.
A type of directional selection.
An increase in genetic diversity.
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What does directional selection favor?
All individuals equally.
Individuals at one end of the phenotype curve.
Individuals at both extremes of the phenotype curve.
Individuals at the center of the phenotype curve.
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What is the founder effect?
A change in allele frequency due to a large population.
A change in allele frequency following a small subgroup's migration.
A type of stabilizing selection.
A process that eliminates genetic variation.
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Which type of selection results in two or more contrasting phenotypes?
Directional selection.
Stabilizing selection.
Genetic drift.
Disruptive selection.
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