7.14 Multiple Choice Questions

3 min readdecember 11, 2021

AP Biology 🧬

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Multiple Choice Practice for Natural Selection

Welcome to Unit 7 AP Biology Multiple Choice Questions! Grab some paper and a pencil 📄 to record your answers as you go. You can see how you did on the Unit 7 Practice Questions Answers and Review sheet once you're done. Don't worry, we have tons of resources available if you get stumped 😕 on a question. And if solo study is not your thing, join a group in Hours!
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Facts about the test: The AP Biology exam has 60 multiple choice questions and you will be given 1 hour 30 minutes to complete the section. That means it should take you around 15 minutes to complete 10 questions.
The following questions were not written by College Board and although they cover information outlined in the AP Biology Course and Exam Description the formatting on the exam may be different.

1. For natural selection to occur, a population must have:
A. genetic variation
B. struggle to survive/competition
C. differential reproductive success
D. all of these
2. What does it mean if an organism is more "fit?"
A. stronger and faster
B. Higher reproductive success
C. older and wiser
D. beneficial mutations

3. The environmental pressure acts on the:
A. most fit individual
B. genotype
C. phenotype
D. hardy-Weinberg

4. Antibiotic resistance caused by humans misusing antibiotics is an example of:
A. artificial selection
B. natural selection
C. convergent evolution
D. divergent evolution

5. Choose the best example of convergent evolution:
A. Dolphins and sharks, although unrelated, share a similar adaptation: fins
B. Adaptive radiation of Galapagos finches
C. A population of beetles experience a change in allele frequency due to increased predation
D. Two populations of zebras become separated by a barrier and overtime become different species

6. Two closely related organisms:
A. must have similar habitats
B. have the most genetic divergence
C. share a similar common ancestor
D. show fewer DNA similarities

7. Similar structures due to common descent:
A. vestigial structures
B. analogous structures
C. homologous structure
D. none of these

8. The age of fossils can be found by:
A. rate of decay of isotopes
B. age of nearby rocks
C. geographical data
D. all of these

9. The same allele advantageous in one environment proves to be disadvantageous in another environment. Why?
A. the advantageous allele mutates to a disadvantageous one
B. different environment, different selective pressure
C. different environments produce the same selective pressure
D. the environment changes depending on the allele

10. Phylogenetic trees show:
A. evolutionary relationships between organisms
B. similarities of embryonic development
C. similarities in morphology
D. quantifiable nucleotide differences

11. Typically the BEST evidence when building phylogenetic trees:
A. comparisons of morphology
B. amino acid sequences
C. nucleotide sequences
D. derived characteristics

12. How do you determine which organism is the outgroup when building a phylogenetic tree?
A. the organism with the least differences
B. the organism with the most differences
C. the organism with the most similarities
D. the organism who looks different from the rest

13. In the Hardy-Weinberg equation what does p2 represent?
A. the homozygous dominant phenotype
B. heterozygous genotype
C. homozygous recessive genotype
D. homozygous dominant genotype

14. A H-W problem gives you the frequency of the dominant trait. You begin solving by:
A. Setting that frequency to p2
B. Setting that frequency to q2
C. Use that frequency to find the frequency of the dominant allele
D. Use that frequency to find frequency of the recessive phenotype

15. Why can an extinction event create new opportunity for adaptive radiation?
A. New niches become available allowing different species to take advantage of resources
B. Extinction events occur during periods of environmental stress
C. extinction events have occurred throughout earth's history
D. Humans can cause extinction events

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🦠Unit 4 – Cell Communication & Cell Cycle
👪Unit 5 – Heredity
👻Unit 6 – Gene Expression & Regulation
🦍Unit 7 – Natural Selection
🌲Unit 8 – Ecology
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