Multiple Choice
Which of the following is a characteristic of a population at Hardy-Weinberg equilibrium?
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22. Evolution of Populations
The Hardy-Weinberg Principle
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Allele frequencies can be altered by __________.
A
genetic drift
B
natural selection
C
gene flow
D
None of the listed responses is correct.
E
All of the listed responses are correct.
Verified step by step guidance1
Understand that allele frequencies refer to how common an allele is in a population. These frequencies can change over time due to various evolutionary processes.
Genetic drift is a mechanism of evolution that involves random changes in allele frequencies, especially in small populations. It can lead to significant changes over time purely by chance.
Natural selection is a process where individuals with certain heritable traits tend to survive and reproduce more successfully than others, leading to changes in allele frequencies as advantageous traits become more common.
Gene flow, also known as migration, occurs when individuals from one population move to another, introducing new alleles and altering allele frequencies in the recipient population.
Recognize that all of these processes—genetic drift, natural selection, and gene flow—can alter allele frequencies in a population, which is why the correct answer is that all of the listed responses are correct.
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