Understanding Mutations and Evolution

What is the primary role of mutations in the context of life on Earth?

• They are the main cause of diseases.

• They are the ultimate source of genetic variation.

• They prevent evolution.

• They always harm the organism.

Why can't mutations in body cells lead to evolution?

• They are always harmful.

• They occur too frequently.

• They cannot be passed on to offspring.

• They only affect plants.

Which type of cell must a mutation occur in to be passed on to the next generation?

• Nerve cells

• Skin cells

• Blood cells

• Gametes

How can a beneficial mutation affect a population over time?

• It can lead to immediate changes in the environment.

• It can decrease the population size.

• It can cause the extinction of the species.

• It can increase in frequency through natural selection.

What is evolution in terms of genetic changes?

• A sudden change in an individual's traits.

• A change in the gene pool over time.

• A process that only occurs in plants.

• A random event with no impact on survival.