Understanding Genetic Diversity and Natural Selection

What does genetic diversity refer to in a population?

• Uniform gene distribution

• Variety of genes

• Number of similar alleles

• Number of different alleles of genes

Why is genetic diversity crucial for natural selection?

• It provides a basis for selection

• It stabilizes gene frequency

• It reduces gene mutations

• It ensures faster evolution

What is the end result of natural selection?

• Increased mutations

• Evolution

• Genetic stability

• Decreased biodiversity

Which example illustrates natural selection in the video?

• Plant growth

• Antibiotic resistance in bacteria

• Climate change

• Water cycle

How does natural selection impact allele frequency in a population?

• It decreases it

• It stabilizes it

• It changes it

• It does not affect it

What are the three categories of adaptations mentioned?

• Structural, Functional, Reactive

• Biological, Chemical, Physical

• Molecular, Cellular, Systemic

• Anatomical, Physiological, Behavioral

How do penguins adapt to cold environments?

• By huddling together

• By changing diet

• By flying south

• By migrating

What is an example of natural selection affecting fur color in mice?

• No change in fur color over generations

• Dark fur being a selective disadvantage

• All fur colors being equally advantageous

• White fur being a disadvantage

What type of natural selection favors one extreme trait?

• Disruptive selection

• Directional selection

• Stabilizing selection

• Balancing selection

What happens in stabilizing selection?

• New traits are introduced

• All traits are equally favored

• The modal trait remains most common

• Extreme traits are favored