Evolution and Population Genetics Quiz

What is the definition of a population?

• Members of a single species that live in the same place, at the same time

• A group of organisms that live in the same place, but at different times

• Members of different species that live in the same place

• A group of organisms that live in different places

Why is genetic diversity in populations important?

• It only affects the risk of extinction in small populations

• It has no effect on the risk of extinction

• It decreases the risk of extinction

• It increases the risk of extinction

What is the term for a change in DNA sequence?

• Genetic mutations

• Gene flow

• Genetic drift

• Nonrandom mating

Which type of natural selection favors one extreme phenotype?

• Stabilizing selection

• Random selection

• Directional selection

• Disruptive selection

What is the term for the change in allele frequencies due to random chance events?

• Genetic mutations

• Gene flow

• Nonrandom mating

• Genetic drift

Which type of natural selection favors two extreme phenotypes?

• Disruptive selection

• Directional selection

• Stabilizing selection

• Random selection

What is the term for the study of gene diversity within a population over time?

• Genetic drift

• Population genetics

• Gene flow

• Microevolution

What is the term for all the alleles present within a population?

• Gene pool

• Allele frequency

• Genetic diversity

• Phenotype