Understanding Variation and Its Factors

Which of the following is a type of genetic variation?

• Environmental variation

• Mutation

• Cultural variation

• Behavioral variation

What is the primary source of genetic variation in a population?

• Natural selection

• Genetic drift

• Mutation

• Gene flow

Which factor is most likely to cause variation in a population due to environmental influences?

• Mutation

• Genetic drift

• Climate change

• Gene flow

Which of the following is an example of continuous variation?

• Blood type

• Eye color

• Height

• Tongue rolling ability

Which process can lead to a decrease in genetic variation within a population?

• Mutation

• Natural selection

• Gene flow

• Genetic drift

Which of the following is NOT a factor affecting genetic variation?

• Mutation

• Random mating

• Selective breeding

• Uniform distribution of resources

What type of variation is represented by the different shapes of human noses?

• Discontinuous variation

• Continuous variation

• Genetic drift

• Environmental variation

Which of the following factors can increase genetic variation in a population?

• Inbreeding

• Genetic drift

• Mutation

• Stabilizing selection