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SUPER
Science
9th -
12thgrade
Mechanisms of Evolution: Natural Selection and Genetic Drift
16 questions
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- 1. Multiple Choice
During a hurricane, a population of beetles almost gets completely wiped out. The only beetles that survived were lucky that they were in their nest at the time of the hurricane and had enough food to survive.
Natural selection
Genetic Drift
Gene Flow
Non-Random Mating
- 2. Multiple Choice
Insects become resistant to pesticides very quickly, sometime in one generation. If an insect is resistant to the chemical, most of the offspring will also be resistant. Considering that insect generations can be a matter of weeks, insects in an area can become immune to a chemical within months.
Mutation
Natural Selection
Genetic Drift
Gene Flow
- 3. Multiple Choice
A certain type of plant can produce blue or yellow flowers. During a fire, many yellow flowers are destroyed and now since blue is the dominant trait, the plant reproduces offspring that produce only blue flowers.
Non-Random Mating
Gene Flow
Mutation
Genetic Drift
- 4. Multiple Choice
This is one of the mechanisms of evolution; it is a continuous process in which organisms with traits that make them better-adapted to their environment are more likely to survive and reproduce than organisms without such adaptations
Directional selection
Microevolution
Gene flow / genetic drift
Natural selection
- 5. Multiple Choice
This is the process that ultimately creates new variations and changes in DNA; leads to the creation of new alleles
Mutation
Microevolution
Natural selection
Gene flow / genetic drift
- 6. Multiple Choice
This makes an organism more suited to its environment
species
lifespan
adaptation
mutation
- 7. Multiple Choice
A drastic reduction in the size of a population that can change allele frequencies is called
the bottleneck effect
the founder effect
the gene flow effect
the Thanos effect
- 8. Match
Match the following Population gets smaller (Natural Disaster)
Mutation
Usually decreases genetic variation
Gene Flow
Starting a new population
Genetic Drift
Increases genetic variation
Bottle Neck
Change in DNA sequence
Founders Effect
- 9. Multiple Choice
Genetic drift is driven by chance, not natural selection
true
false
- 10. Multiple Choice
Select the best answer based on the image.
Gene Flow
Genetic Drift
- 11. Multiple Choice
Select the best answer based on the image.
Gene Flow
Genetic Drift
- 12. Multiple Choice
A forest fire ignites in the Sam Houston State Forest and kills many members of a population of pigmy rattlesnakes.
Gene Flow
Genetic Drift
- 13. Multiple Choice
A group of polar bears migrates from the ice floes where they live to the nearby forest, where they interbreed with the brown bears there. This is an example of...
Genetic drift
Gene flow
Natural Selection
Founder Effect
- 14. Multiple Choice
What mechanism of evolution occurs when allele frequencies change over generations due to random chance?
Genetic Drift
Mutation
Natural Selection
Gene Flow
- 15. Multiple Choice
A small group of squirrels gets separates them from the rest of the population due to a large flood. These squirrels, now confined to this new island, begin to start a new population. This is an example of which of the following?
Founder effect
Bottleneck effect
Natural Selection
Gene Flow
- 16. Multiple Choice
The image represents which process?
founder effect
bottleneck effect
gene flow
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