Multiple Choice
Genetic variation in a population refers to which of the following?
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22. Evolution of Populations
Genetic Variation
Multiple Choice
Which of the following processes contribute to the increase and decrease of allele variation in a population?
A
Mutation
B
Natural selection
C
Genetic drift
D
Mitosis
Verified step by step guidance1
Understand that allele variation in a population refers to the different forms of a gene that exist within that population.
Recognize that mutation is a process that introduces new alleles into a population by altering the DNA sequence, thus increasing genetic variation.
Identify that natural selection is a process where certain alleles become more common in a population because they confer a survival or reproductive advantage, potentially decreasing variation if certain alleles are favored.
Acknowledge that genetic drift is a random process that can lead to changes in allele frequencies in a population, often reducing genetic variation, especially in small populations.
Note that mitosis is a process of cell division that results in two identical daughter cells and does not contribute to changes in allele variation within a population.
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