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- 1. Multiple Choice
Reindeer from a rancher in Alaska escape from their pen during an enormous snow storm. After their escape, they mate with wild caribou that are migrating across the land. The offspring of these have traits for short legs and have tame behavior.
Gene Flow
Genetic Drift
Non-Random Mating
Natural Selection
- 2. Multiple Choice
Males of the bighorn sheep species fight one another to show females who is the dominant male and are more likely to mate with females.
Natural Selection
Mutation
Genetic Drift
Non-Random Mating
- 3. 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
- 4. 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
- 5. Multiple Choice
A chemical spill causes the offspring of ladybugs to have blue dots instead of black dots.
Natural Selection
Genetic Drift
Mutation
Gene Flow
- 6. Multiple Choice
The country of Sweden is known for having people with blonde hair and blue eyes. One day a family moves from Sweden to India where dark hair and dark eyes are very common. A female from Sweden marries a male from India and their offspring now have blonde hair and blue eyed traits.
Natural Selection
Mutation
Non-Random Mating
Gene Flow
- 7. 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
- 8. Multiple Choice
Some organisms of a population of birds are born with extra-long beaks instead of a normal sized beak.
Gene Flow
Natural Selection
Genetic Drift
Mutation
- 9. Multiple Choice
In a habitat there are red bugs and green bugs. The birds prefer the taste of the red bugs, so soon there are many green bugs and few red bugs. The green bugs reproduce and make more green bugs and eventually there are no more red bugs
Genetic Drift
Natural Selection
Gene Flow
Mutation
- 10. Multiple Choice
Females a certain bird species are attracted to the mating calls of male species more than others
Genetic Drift
Mutation
Non-Random
Natural Selection
- 11. Multiple Choice
Which combination of characteristics in a population would provide the greatest potential for evolutionary change?
Small population, low mutations rates
Large population, low mutation rates
Small population, high mutation rates
Large population, high mutation rates
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