Unit 5 Vocabulary: Selection Types and Altruism

Which type of natural selection occurs when one extreme phenotype is favored?

• Random selection

• Disruptive selection

• Stabilizing selection

• Directional selection

What is the term for a behavior that increases the fitness of another individual while decreasing the fitness of the one doing the behavior?

• Symbiosis

• Altruism

• Cooperation

• Competition

In which type of natural selection does the intermediate phenotype get favored?

• Directional selection

• Stabilizing selection

• Disruptive selection

• Balanced selection

What is the main factor that drives the evolution of group behavior in some populations of organisms?

• Genetic mutation

• Increased chance of survival

• Desire for social interaction

• Increased competition for resources

Which type of natural selection can result in the disappearance of the intermediate phenotype?

• Directional selection

• Balanced selection

• Stabilizing selection

• Disruptive selection

What is the term for the process by which species evolve to become more suited to their environment?

• Adaptation

• Mutation

• Selection

• Evolution

Which type of natural selection occurs when both extreme phenotypes are favored over the intermediate phenotype?

• Directional selection

• Stabilizing selection

• Disruptive selection

• Balanced selection

Match the following types of selection with the corresponding image.

• disruptive selection

• 
• natural selection

• 
• stabilizing selection

• 
• sexual selection

• 
• directional selection

•