Evolution Review

This mechanism of evolution occurs when individuals migrate between populations.

• Extinction
• Gene flow
• Genetic drift
• Natural Selection

Genetic drift is change in the allele frequency of a population due to...

• random chance
• natural selection
• non-random mating (sexual selection)
• artificial selection

Which of the following is a factor in natural selection?

• Individuals of species compete with one another to survive.
• All species are genetically diverse.
• Individuals better able to adapt to changes leave more offspring.
• All are correct 

The fossil record provides evidence that 

• Fossils cannot be dated.
• All species were formed during Earth’s formation and have changed little since then.
• The fossilized species have no connection to today’s species.
• Older species gave rise to more-recent species.

Individuals that are better able to cope with the challenges of their environment tend to  

• Decrease in population over time.
• Leave more offspring than those less suited to the environment.
• Leave fewer offspring than those less suited to the environment.

Structures that share a common ancestry or are similar because they are modified versions of structures from a common ancestor that contain the same basic bone structure are

• Not related.
• Not homologous. 
• Homologous.
• Young in origin.

When animals with varied traits reproduce sexually, chromosomes are crossed over in prophase I which creates new alleles, this mechanism of evolution is

• mutation

• gene flow

• genetic recombination

• natural selection

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 - Founder Effect

• Natural Selection

• Gene Flow

• Genetic Drift - Bottleneck

Genetic drift is change in the allele frequency of a population due to...

• random chance
• natural selection
• non-random mating (sexual selection)
• artificial selection

 Genetic Drift is more likely to happen in... 

• aquatic populations
• small populations
• terrestrial populations
• older populations