Test Bank to accompany Animal Behavior 12th Edition
By John Alcock, Linda Green, Paul Nolan, Stefanie Siller, and Dustin
Rubenstein
| All Chapters | Expert Verified Answers | Graded A+
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Chapter 1: An Introduction to Animal Behavior
Multiple Choice Questions
1. “If female lizards with reddish throats produce more eggs than females with orangish
throats, then the reddish throat is an evolved adaptation.” This statement
a. is true, because this species has variation, a critical requirement for the
evolution of adaptations by natural selection.
b. is false, because females with orangish throats could still have more offspring that
live to reproduce than females with reddish throats.
c. is false, because there is no guarantee that females with reddish throats are the best
for the long-term preservation of this species.
d. could be true or false, because we cannot tell without knowing whether reddish
females outnumber orangish females in this species.
Answer: b
Learning Objective: 1.1.1 Identify the conditions required to produce evolutionary change
through natural selection and examine these conditions using the gene’s eye view.
Bloom’s Level: 2. Understanding
2. The statement “Lemmings disperse from areas of high population density because
they inherited this ability from a lemming-like ancestor in the past” is a hypothesis
about
a. evolved function.
b. genetics and development.
c. evolutionary history.
d. adaptive
value.
Answer: c
Learning Objective: 1.1.3 Consider how proximate and ultimate levels of analysis can be used to
provide an integrative understanding of the development, mechanism, adaptive value, and
evolutionary history of a behavior.
Bloom’s Level: 2. Understanding
3. The infanticide hypothesis, which posits that infanticide is a reproduction-enhancing
tactic practiced by males, is called a hypothesis because it
a. can be proven.
b. is an explanation based on limited evidence that can be tested.
c. is mutually exclusive to any other potential explanations.
d. is a basic principle that can be applied
widely.
Answer: b
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Learning Objective: 1.1.2 Review how researchers use the scientific method to test
hypotheses and predictions related to a potentially adaptive behavior in order to consider
its fitness costs and benefits, evaluate its adaptive value, and identify why it evolved.
Bloom’s Level: 2. Understanding
4. In order for Darwinian natural selection to cause evolutionary change, a population
must contain individuals that differ hereditarily in some characteristic because
a. in a population without this kind of variation, the species is doomed to extinction.
b. when all individuals have the same genes, then all individuals are exactly alike in all respects.
c. uniform populations are evolutionary dead ends.
d. unless there is variation of this sort, parents cannot pass on their advantageous
attributes to their offspring.
Answer: d
Learning Objective: 1.1.1 Identify the conditions required to produce evolutionary change
through natural selection and examine these conditions using the gene’s eye view.
Bloom’s Level: 2. Understanding
5. We observe variation in a population of lizard with respect to how fast individuals can
run. We attempt to select for the ability to run slowly, not quickly. After six generations of
selective breeding of only the slowest with the slowest, the mean running speed of the
lizards has not changed. What is the appropriate scientific conclusion based on this
work?
a. After six generations of artificial selection, the frequency of slow runners in the
population has remained unchanged.
b. After six generations of artificial selection, the frequency of slow runners in the
population has increased.
c. The differences between the lizards in running speed in the original population
were not caused by genetic differences among them.
d. The results are invalid because the researchers failed to maintain enough variation in
running speed in their selected lineage, so evolutionary change was impossible.
Answer: c
Learning Objective: 1.1.1 Identify the conditions required to produce evolutionary change
through natural selection and examine these conditions using the gene’s eye view.
Bloom’s Level: 3. Applying
6. We observe a frog that carries its babies on its back away from where the eggs hatched.
Here are two questions about this observation:
X. Does the frog do this to move the babies to a place where they will be safer and more likely
to survive?
Y. Does the frog have specific morphological traits that enable it to hold and transfer its
babies in this way?
Which of the two is a proximate question?
a. X, because it considers the adaptive value or function of the trait
b. Y, because it asks about the developmental mechanisms that influence the components
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