Evolution/Classification Exam Practice

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.

• Genetic Drift
• Natural Selection
• Non-random mating
• Mutation

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.

• Genetic Drift
• Mutations
• Non-random mating
• Gene flow

Bats are common in Texas, especially in rocky regions. Bats with longer hang claws have demonstrated higher fitness because of their ability to cling to rock while resting.

• Adaptation
• Non-random mating
• Gene Flow
• Mutation

What does the image represent?

• Gene flow
• Gene drift
• Mutation
• Adaptation

Which structures are between species that are similar structure, but have different functions (mammal forearms), and show evolution from a common ancestor?

• vestigial structure
• homologous structure
• analogous structure
• mutation 

If an organism has a vestigial structure, that structure likely once had a function in a(n

• close relative.
• early ancestor.
• unrelated organism.
• embryological stage.

Which evolutionary mechanism is necessary for evolution to occur?

• genetic drift
• gene flow
• nonrandom mating
• mutation 

Which describes natural selection?

• Some live and some die in each generation   
• Only the largest and strongest survive
• Random assortment of genes results in better characteristics in the following generations
• The best adapted individuals survive and reproduce, contributing the most to the next generation

Which of the following is true of genetic drift?

• It can decrease genetic diversity in a population
• It is necessary in order for a population to be in equilibrium
• It can increase genetic diversity in a population 
• It plays a much larger role in determining the genetic makeup of populations than natural selection 

All of the individuals of a species that live in the same area.

• species
• population
• fitness
• heritability