Download Evolution Review

SBI 3U
Mrs. Holterman
Name: _______________________________
Test Date: _______________________________
Evolution Review
1. The perfectly formed wing of insects that cannot fly can be described as…
a. Poorly adapted
d. Fossilized
b. Vestigial
e. A new trait
c. Evidence of an acquired trait
2. If you explore a remote oceanic island, what should you expect to observe about the local species?
a. That they closely resemble the species living on islands with very similar climates
b. That they show little variation
c. That they closely resemble the species living on the nearest large landmass
d. That they do not closely resemble any other species anywhere
3. Which of the following is true?
a. Individuals evolve but species do not.
d. Individuals and species evolve.
b. Populations evolve but species do not.
e. Individuals and populations evolve.
c. Populations evolve but individuals do not.
4. Which of the following does not contribute to the rapid evolution of bacteria?
a. Bacteria reproduce very rapidly.
b. Bacteria can be subjected to changes in their environment.
c. Many harmful mutations occur over time.
d. Bacteria populations are extremely large.
e. Bacteria have smaller quantities of DNA than eukaryotic organisms.
5. The following is the type of mutation least likely to influence the evolution of a species:
a. A mutation in a body cell.
b. A beneficial mutation that occurs extremely rarely.
c. A mutation that occurs in sperm or egg.
d. A mutation leading to the formation of a polyploid individual.
e. A lethal mutation.
6. Which of the following is false?
a. Directional selection is responsible for increased running speed in the cheetah.
b. Disruptive selection resulted in the evolution of Darwin’s finches.
c. Stabilizing selection can account for the little change in crocodiles over millions of years.
d. Sexual selection is primarily responsible for bright colouration in poison-arrow frogs.
e. Disruptive selection accounts for the change in the body size of salmon population
under heavy fishing pressure.
7. Which of the following is true in small populations?
a. Genetic drift is rare and has little influence over evolutionary change.
b. Bottlenecks result in an increase in genetic diversity in the population.
c. Chance leads to increased appearance of recessive traits in the population.
d. Chance leads to increased appearance of heterozygous individuals in the population.
8. Outline the contributions of Lyell, Malthus and Lamarck to an understanding of life on Earth.
9. Use several examples of domesticated animals or plants to illustrate the great range of traits that
can result from artificial selection.
SBI 3U
Mrs. Holterman
Name: _______________________________
Test Date: _______________________________
10. Provide 2 examples of each of the following:
a. Directional selection
b. Stabilizing selection
c. Disruptive selection
d. Sexual selection
11. Would you expect bacteria that infect wildlife to show signs of antibiotic resistance? Explain.
12. A small population of pygmy mammoth, measuring only 2m in height once lived on an island near
California. Biologists believe this is an example of a population that descended from a few large
mammoth that reached the island more than 50000 years ago. Explain how the small founding
population, remote location and natural selection on this island might have each contributed to the
formation of this unusual species.
13. Suggest a possible scenario for the evolution of nest-building behavior in birds.
14. In many zoos, female tigers are artificially inseminated with semen from male tigers that live
halfway across the world.
a. Why do you think this is being done?
b. How might this affect the gene pool of tiger populations?
c. Do you think these efforts are enough to prevent a genetic bottleneck from occurring? Explain.
d. What conditions do you think are necessary to ensure the genetic diversity of zoo populations?
15. True or False: Evolutionary biologists disagree about the pace of evolution.
16. Explain whether you would expect gradualism (evolution occurs at a steady pace) or punctuated
equilibrium to best describe the expected pace of evolution following these events:
a. A remote island is devastated by a volcanic eruption.
b. An aggressive carnivore is introduced to a remote but biologically diverse island.