Mechanisms for Evolution

Front

A few deer wander out of their native woods into a completely new park where no deer had ever been before. They go on to create an entirely new population.

Back

Genetic Drift

Front

Yellow toucan birds seek out one another to make babies together and tend to avoid the green toucan birds.

Back

Non-random mating

Front

During gestation (pregnancy), a developing male pig had a change in his genetic code. The result was that he produced less nitrogenous solid waste.

Back

Mutation

Front

Five hundred years after the deer had established a flourishing population in the park, a few of them venture back to their original woods and have babies with the deer there. Options: Genetic Drift, Mutations, Non-random mating, Gene flow

Back

Gene flow

Front

Wolves from the Arizona mesa were transferred to the Colorado Rockies after a forest fire destroyed their habitat. They quickly became part of the local pack and had offspring. Options: Mutation, Natural Selection, Genetic Drift, Gene Flow

Back

Gene Flow

Front

What evolutionary mechanism explains the increase in the Mustang population from 7 to 122? Options: Genetic Drift (small population), Non-random mating, Gene flow, Mutations

Back

Genetic Drift (small population)

Front

Which of the following is an example of the bottle neck effect? Options: Bald Eagles are hunted until near extinction, population recovers., Small group of iguanas floats to an island, starts a new population., Red fox pups are more likely to survive in a snowy environment if they are born white., Farmer chooses seeds from largest apples to plant next year. This results in larger apples from year to year.

Back

Bald Eagles are hunted until near extinction, population recovers.

Front

All of the genetic information found in a population.

Back

gene pool

Front

Gene Flow tends to ___________ genetic variation (diversity)

Back

Increase

Front

Which of the following is an example of the bottleneck effect? Options: Cheetah populations reach their lowest levels with reduced diversity and as they rebound are so genetically similar they appear to be inbred., Affected individuals with blue skin can trace their ancestry back to one of the first settlers in the region., The environment of a fox population changes and over time foxes who are white survive and pass on their genes to their offspring., Humans choose two dogs they like the characteristics of and breed them together.

Back

Cheetah populations reach their lowest levels with reduced diversity and as they rebound are so genetically similar they appear to be inbred.