Multiple Choice
Which of the following processes contribute to the increase and decrease of allele variation in a population?
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22. Evolution of Populations
Genetic Variation
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Which factor would most likely disrupt genetic equilibrium in a large population?
A
No mutations
B
Natural selection
C
Large population size
D
Random mating
Verified step by step guidance1
Understand the concept of genetic equilibrium, which refers to a state where allele frequencies in a population remain constant over generations in the absence of evolutionary forces.
Identify the conditions required for genetic equilibrium according to the Hardy-Weinberg principle: no mutations, random mating, no natural selection, large population size, and no gene flow.
Analyze each given factor to determine its impact on genetic equilibrium: 'No mutations' means genetic information remains unchanged, supporting equilibrium.
Consider 'Large population size,' which reduces the impact of genetic drift, thus maintaining equilibrium.
Evaluate 'Natural selection,' which involves differential survival and reproduction, leading to changes in allele frequencies and disrupting genetic equilibrium.
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