Natural selection Quiz
Studying this course? Keep your progress in one place.
Pick an answer for each. Quizzes never use energy.
5 questions, one answer each
Each answer is checked as you go, with why.
See all 5 questions
1. What is the original source of a new allele?
- A. Competition
- B. Mutation
- C. Camouflage
- D. Reproduction alone
2. Which statement about natural selection is correct?
- A. Individuals change their alleles to cope with a new environment
- B. Only the strongest individuals ever survive
- C. Individuals with advantageous alleles are more likely to survive and reproduce
- D. Offspring are always better adapted than their parents
3. Why did dark peppered moths become common in polluted cities?
- A. They were camouflaged on dark trunks, so birds ate fewer of them
- B. They were stronger than pale moths
- C. Soot turned pale moths dark
- D. They had fewer predators because birds avoided soot
4. A population of bacteria is treated with an antibiotic and a few survive. What happens next?
- A. The survivors become resistant because they need to
- B. The surviving resistant bacteria reproduce and pass on the resistance allele
- C. The antibiotic becomes stronger
- D. All the bacteria die eventually
5. Which pair of scientists independently proposed natural selection?
- A. Mendel and Pasteur
- B. Lamarck and Darwin
- C. Darwin and Wallace
- D. Wallace and Fleming