Evolution, Fitness and Natural Selection

What does the presence of rear legs in whales suggest about their evolutionary history?

• Whales have always lived in the ocean.

• Whales evolved from land-dwelling ancestors.

• Whales evolved from fish that had fins.

• Whales developed rear legs for swimming.

Which of the following is an example of a vestigial structure?

• A horse's teeth

• A whale's fin

• A human's appendix

• A bird's wing

How does DNA provide evidence for evolution?

• It demonstrates that all species evolved at the same rate.

• It shows that DNA does not change over generations.

• It proves that all species have identical DNA.

• It shows how mutations accumulate over time.

What does comparing the FGF2 gene in humans and chimpanzees reveal?

• Humans and chimpanzees have no genetic similarities.

• Humans and chimpanzees share significant genetic overlap.

• Humans and chimpanzees have identical genomes.

• Humans and chimpanzees evolved from different ancestors.

What is the purpose of population simulation software in studying evolution?

• To create new species through genetic engineering.

• To simulate how populations change under different conditions.

• To study fossils and their formation.

• To predict the extinction of species.