Natural selection and speciation 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. Natural selection
- B. Random mutation
- C. Gene flow
- D. Adaptation to the environment
2. Which is a behavioural adaptation?
- A. A thick layer of fat
- B. Production of antifreeze proteins in the blood
- C. Migrating south for the winter
- D. Long, powerful hind legs
3. Two populations of a fish species live in separate lakes. Which term describes how they may become different species?
- A. Sympatric speciation
- B. Convergent evolution
- C. Artificial selection
- D. Allopatric speciation
4. Which describes sympatric speciation?
- A. Speciation after a river splits a population
- B. Speciation caused by an antibiotic
- C. Speciation without any mutation
- D. Speciation within the same area through reproductive isolation
5. Why must new antibiotics keep being developed?
- A. Bacteria become resistant because they are exposed to the antibiotic and mutate to survive
- B. Resistance alleles arise by mutation and antibiotics select for them, so resistant strains spread
- C. Antibiotics change the DNA of bacteria so they are less effective over time
- D. Patients become immune to antibiotics