All of the following are evolutionary processes EXCEPT:
a) Random mating
b) Genetic drift
c) Mutation
d) Natural selection
e) Migration
Question 2
Your answer is CORRECT.
Darwin developed the theory of evolution
...
All of the following are evolutionary processes EXCEPT:
a) Random mating
b) Genetic drift
c) Mutation
d) Natural selection
e) Migration
Question 2
Your answer is CORRECT.
Darwin developed the theory of evolution by natural selection in the absence of what critical
information?
a) Germ theory of disease
b) Mendelian genetics
c) Population growth rates
d) Transitional fossils
e) Biogeography
f) All of the above
Question 3
Your answer is CORRECT.
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Which process is demonstrated in the figure below?
a) genetic drift
b) artificial selection
c) natural selection
d) Hardy-Weinberg equilibrium
e) migration
Question 4
Your answer is CORRECT.
Protists are microbial eukaryotes. In the eukaryotic phylogeny below, all of the protist lineages are
indicated in yellow. What can you say about protists based on this phylogeny?
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a) They are multicellular.
b) They evolved multiple times independently.
c) They are non-monophyletic.
d) They evolved due to directional selection.
e) None of the above.
Question 5
Your answer is CORRECT.
Which of the following best summarizes the process of evolution by natural selection?
a) Mutations that improve the fitness of individuals will tend to increase in frequency over
time.
b) Most mutations have harmful effects and therefore increase in frequency over time.
c) Mutations that do not affect the fitness of individuals are selected to decrease in frequency
over time.
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d) Natural selection results in mutations that disrupt finely tuned processes.
Question 6
Your answer is CORRECT.
According to the figure below, which of the following is true?
a) Sponges are more closely related to Cnideria than they are to Mollusca.
b) Arthropods are more closely related to roundworms than they are to Echinoderms.
c) Sponges are not related to Chordates.
d) Flatworms form a monophyletic group with Radiata.
e) Chordates are more evolved than Molluscs.
Question 7
Your answer is INCORRECT.
Which of the following can generate variation in a population?
a) Genetic drift
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b) Heterozygote advantage
c) Convergent evolution
d) Fixation of neutral alleles
e) None of the above.
Question 8
Your answer is CORRECT.
Spines, flowers, and a waxy stem coating are all adaptations of cacti because
a) these traits increase the fitness of cacti and arose as a result of natural selection for their
current functions.
b) these traits arose prior to the diversification of cacti and perform different functions in
different cactus species.
c) they develop when the climate is dry, making the cacti a better fit to the environment.
d) they arose by chance and do not provide any benefit to the individuals that have these traits.
Question 9
Your answer is CORRECT.
The figure below shows the wing length of cliff swallows that died as a result of road kill and
wing length in the population at large. What do these data indicate about natural selection acting
on wing length in cliff swallows?
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