Mechanisms of Evolution Quiz

What is evolution?

• The process by which modern organisms have descended from ancient organisms

• The process by which organisms change in order to better survive in a certain environment

• The process by which organisms reproduce and pass on their genetic material

• The process by which organisms adapt to their environment

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Which mechanism of evolution refers to the changes in allele frequencies within a single population?

• Natural selection

• Genetic drift

• Mutations

• Gene flow

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What is natural selection?

• The process by which organisms that are most suited to their environment survive and reproduce most successfully

• The process by which organisms randomly change their genetic material

• The process by which organisms migrate to new populations

• The process by which organisms undergo genetic mutations

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Which of the following is an example of natural selection?

• Giraffes with longer necks being able to reach leaves on tall trees

• Birds eating green beetles instead of brown beetles

• Peppered moths changing color to blend in with their environment

• Butterflies migrating to a new area and creating a new population

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What is genetic drift?

• A random change in allele frequency caused by chance occurrences

• The movement of alleles from one population to another

• The process of genetic material changing in a cell

• The change in allele frequencies following a reduction in population size

Which of the following is an example of the bottleneck effect?

• A population of organisms experiencing a dramatic reduction in size, resulting in a change in allele frequency

• A small subgroup of a population migrating to a new area and changing allele frequencies

• Changes in the genetic material of a cell leading to new alleles in a population

• The movement of alleles from one population to another

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What are mutations?

• Changes in the genetic material of a cell, leading to new alleles in a population

• The movement of alleles from one population to another

• Random changes in allele frequency caused by chance occurrences

• The process by which organisms that are most suited to their environment survive and reproduce most successfully

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What is gene flow?

• The movement of alleles from one population to another

• The process of genetic material changing in a cell

• A random change in allele frequency caused by chance occurrences

• The change in allele frequencies following a reduction in population size

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Which mechanism of evolution involves the movement of alleles from one population to another?

• Natural selection

• Genetic drift

• Mutations

• Gene flow

What is the founder effect?

• A change in allele frequencies as a result of the migration of a small subgroup of a population

• A random change in allele frequency caused by chance occurrences

• The change in allele frequencies following a reduction in population size

• The process of genetic material changing in a cell