Multiple Choice Identify the
choice that best completes the statement or answers the question.
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1.
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The different species
of finches on the Galapagos Islands are believed to have arisen as a result of natural selection
acting on populations of finches that had experienced.
a. | convergent evolution | b. | gene flow | c. | the bottleneck
effect | d. | geographic isolation | e. | hybrid sterility |
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2.
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Toads in a particular population vary in size. A
scientist observes that in this population, large males mate with females significantly more often
than small males do. All the following are plausible hypotheses to explain this observation
EXCEPT:
a. | Females select large males more often than they select
small males as mates. | b. | Small females are
more likely to mate with small males and large females are more likely to mate with large
males. | c. | Large males are successful in competing for mates more
often than small males are. | d. | Large males occupy
more breeding territory than small males do. | e. | The calls produced
by large males are more attractive to females than the calls made by small
males. |
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3.
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A moth's color is controlled by two alleles,
G and g, at a single locus. G (gray) is dominant to g (white). A
large population of moths was studied, and the frequency of the G allele in the population
over time was documented, as shown in the figure below. In 1980, a random sample of 2,000 pupae
was collected and moths were allowed to emerge.
 Figure
1
Looking at Figure 1, during which of the following
time periods could the population have been in Hardy-Weinberg equilibrium for the G
locus?
I.
1960-1964 II. 1965-1972 III.
1973-1980
a. | I only | b. | II only | c. | III
only | d. | I and III only | e. | I, II, and III |
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4.
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A moth's color is controlled by two alleles,
G and g, at a single locus. G (gray) is dominant to g (white). A
large population of moths was studied, and the frequency of the G allele in the population
over time was documented, as shown in the figure below. In 1980, a random sample of 2,000 pupae
was collected and moths were allowed to emerge.
 Figure
1.
Using
Figure 1, assume the population was in Hardy-Weinberg equilibrium for the G locus
in 1962. What percentage of moths in the natural population were white in
1962?
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5.
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A moth's color is controlled by two alleles,
G and g, at a single locus. G (gray) is dominant to g (white). A
large population of moths was studied, and the frequency of the G allele in the population
over time was documented, as shown in the figure below. In 1980, a random sample of 2,000 pupae
was collected and moths were allowed to emerge.
 Figure
1.
Assuming
that the population was in Hardy-Weinberg equilibrium for the G locus, what percentage of the
gray moths that emerged in 1980 was heterozygous?
a. | 0% | b. | 25% | c. | 33% | d. | 67% | e. | 100% |
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6.
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A moth's color is controlled by two alleles,
G and g, at a single locus. G (gray) is dominant to g (white). A
large population of moths was studied, and the frequency of the G allele in the population
over time was documented, as shown in the figure below. In 1980, a random sample of 2,000 pupae
was collected and moths were allowed to emerge.
 Figure
1.
Using
Figure 1, assume the population was in Hardy-Weinberg equilibrium for the G locus
in 1980. What was the frequency of allele G in the gray moths that emerged in
1980?
a. | 0.33 | b. | 0.50 | c. | 0.67 | d. | 0.75 | e. | 1.00 |
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7.
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A moth's color is controlled by two alleles,
G and g, at a single locus. G (gray) is dominant to g (white). A
large population of moths was studied, and the frequency of the G allele in the population
over time was documented, as shown in the figure below. In 1980, a random sample of 2,000 pupae
was collected and moths were allowed to emerge.
 Figure
1.
Which of
the following is the most likely reason for the observed differences in the frequency of the G
allele between 1965 and 1972?
a. | Emigration of white moths from the
population | b. | Chance | c. | Selection against
gray phenotypes | d. | Speciation | e. | Mutation |
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8.
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In a small group of
people living in a remote area, there is a high incidence of “blue skin”, a condition
that results from a variation in the structure of hemoglobin. All of the “blue-skinned”
residents can trace their ancestry to one couple, who were among the original settlers of this
region. The unusually high frequency of “blue skin” in the area is an example
of
a. | mutation | b. | genetic drift | c. | natural
selection | d. | sexual selection | e. | heterozygote advantage |
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9.
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The wing of a bat, the flipper of a whale, and the
forelimb of a horse appear very different, yet detailed studies reveal the presence of the same basic
bone pattern. These structures are examples of
a. | analogous structures | b. | homologous structures | c. | vestigial
structures | d. | balanced
polymorphism | e. | convergent
'evolution |
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10.
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Although the seal and the penguin both have
streamlined, fishlike bodies with a layer of insulating fat, they are not closely related. This
similarity results from
a. | convergent evolution | b. | adaptive radiation | c. | homologous
evolution | d. | coevolution | e. | parallel evolution |
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11.
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The appearance of a fertile, polyploid individual
within a population of diploid organisms is a possible source of a new species. If this individual is
capable of reproducing to form a new population, scientists would consider this to be an example
of
a. | allopatric speciation | b. | sympatric speciation | c. | polygenic
inheritance | d. | genetic
drift | e. | Hardy-Weinberg
equilibrium |
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12.
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The bones of a human arm are homologous to
structures in all of the following EXCEPT a
a. | whale flipper | d. | bird
wing | b. | bat wing | e. | frog
forelimb | c. | butterfly wing |
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13.
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Some varieties of Neisseria gonorrhoeae are now resistant to
penicillin. These varieties of bacteria most probably developed as a result of
a. | natural selection | b. | hybrid vigor | c. | coevolution | d. | adaptive
radiation | e. | convergent
evolution |
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14.
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Milkweed is a common field plant that produces a cardiac glycoside which, like
digitalis, stimulates heart contractions. The synthesis of this compound ensures the survival of this
plant species because the glycoside is toxic to most herbivores with a notable exception-the monarch
butterfly. Female monarchs lay their eggs on milkweed and the resulting larvae (caterpillars) feed
on milkweed leaves. An enzyme produced by the caterpillars allows them to ingest and store the toxin
without ill effects. After pupation, adult monarchs emerge with a conspicuous bright orange and black
banding pattern and retain the toxic glycoside in their systems. Viceroy butterflies are almost
identical to monarchs in possessing the conspicuous banding pattern. However, viceroys cannot
metabolize or store the toxic glycoside.
Which of the following is the central concept of the
situation described above?
a. | Cryptic coloration | b. | Defensive adaptation | c. | Convergent
evolution | d. | Polymorphism | e. | Adaptive radiation |
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15.
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Milkweed is a common field plant that produces a cardiac glycoside which, like
digitalis, stimulates heart contractions. The synthesis of this compound ensures the survival of this
plant species because the glycoside is toxic to most herbivores with a notable exception-the monarch
butterfly. Female monarchs lay their eggs on milkweed and the resulting larvae (caterpillars) feed
on milkweed leaves. An enzyme produced by the caterpillars allows them to ingest and store the toxin
without ill effects. After pupation, adult monarchs emerge with a conspicuous bright orange and black
banding pattern and retain the toxic glycoside in their systems. Viceroy butterflies are almost
identical to monarchs in possessing the conspicuous banding pattern. However, viceroys cannot
metabolize or store the toxic glycoside.
The conspicuous banding
displayed by monarch butterflies is an example of
a. | polygenic inheritance | b. | polymorphism | c. | divergent
evolution | d. | cryptic coloration | e. | warning coloration |
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16.
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The introduction of antibiotics such as penicillin several years ago was
immediately effective in combating infections caused by Staphylococcus. In 1958, however,
there were several outbreaks of staphylococcal infections. People with the infections did not respond
to treatment with any of the antibiotics and there was a large number of deaths. The best explanation
for this situation is that
a. | the bacteria reproduced in hosts that were not
contaminated with antibiotics | b. | the bacteria from
other hosts such as birds, cats, and dogs migrated into human hosts | c. | the bacteria exposed to nonlethal doses of antibiotics quickly learned to
avoid them | d. | each generation of
bacteria acquired the ability to use antibiotics as nutrients | e. | antibiotic-resistant bacteria survived and multiplied, and these were the
forms causing the infections |
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17.
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As part of an experiment to investigate the effects of cadmium on the hearts
and livers of rats, the experimental group of rats receives 5 parts per million of cadmium in their
drinking water each day. The control rats are given water from which all cadmium has been removed.
For the experiment to be valid all of the following conditions are necessary
EXCEPT:
a. | The rats should eat the same kinds and amounts of
food. | b. | The experimental and control rats should be the same age
and have the same body weight. | c. | The rats should be
housed under the same conditions of temperature and humidity. | d. | The control rats should receive water fortified with other minerals to make up
for the cadmium loss. | e. | The rats should be
members of the same species. |
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18.
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The external similarity of dolphins to sharks is an example
of
a. | convergent evolution | b. | divergent evolution | c. | behavioral
isolation | d. | geographic isolation | e. | adaptive radiation |
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19.
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A new species of organism has evolved when
a. | the climate of a population's area has changed
greatly | b. | a population can no longer interbreed under natural
conditions with other closely related organisms | c. | variation has
occurred within the species due to mutations | d. | a population has
been recently isolated from the rest of the species by a geographic
barrier | e. | selection pressures have produced a group of
demes |
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20.
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In a population at equilibrium, thousands of eggs and hundreds of tadpoles are
produced by a single pair of frogs. About how many offspring will live to maturity and
reproduce?
a. | 0 | b. | 2 | c. | 10-20 | d. | 100 | e. | More than
100 |
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21.
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All of the following conditions would result in a change in the frequency of a
specific allele in a population EXCEPT
a. | selection against the recessive
phenotype | b. | selection against the dominant
phenotype | c. | genetic drift | d. | random mating in a large population | e. | mutation of the dominant allele to the recessive
allele |
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22.
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If a particular recessive allele of a gene pair in a population exists at a
frequency of 0.4, and the other allele shows complete dominance, the dominant phenotype is seen in
what percentage of the individuals in this population?
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23.
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The table below gives both the common and scientific names of five
vertebrates.  Which two vertebrates are most closely
related?
a. | A and B | c. | B and
E | b. | C and D | d. | A and D |
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24.
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The term evolution is best described as
a. | a process of change in a population through time | b. | a process by which
organisms become extinct | c. | the reproductive isolation of members of
certain species | d. | the replacement of one community by another |
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25.
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Fossil records indicate that between 80 million and 60 million years ago the
structure of the horned dinosaur frequently underwent rapid changes separated by long periods of
stability. This pattern of change best illustrates the concept of
a. | enzyme specificity | b. | gradualism | c. | punctuated
equilibrium | d. | use and disuse |
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26.
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The Hardy-Weinberg principle of population genetics can be applied to a
population that can reproduce only
a. | by budding | b. | asexually | c. | by binary
fission | d. | sexually |
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27.
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Of the following methods of pollination, which onw would result in the least
selection pressure for the evolution of colored or odoriferous flowers?
a. | pollination by night-flying bats | b. | pollination by butterflies | c. | pollination by
hummingbirds | d. | pollination by wind | e. | pollination by flies and
bees |
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28.
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The evolution of the Galapagos finches from a common ancestral form is thought
to have occurred by the mechanism of
a. | convergence | b. | coevolution | c. | parallel
evolution | d. | adaptive radiation | e. | sympatric
speciation |
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29.
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All of the following factors may be involved in sympatric speciation
EXCEPT
a. | poliyploidy | b. | habitat isolation | c. | geographic
isolation | d. | host-specificity | e. | sexual
imprinting |
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30.
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In their similaries, the wing of a butterflyand the wing of a bat
exemplify
a. | parallel evolution | b. | divergent evolution | c. | convergent
evolution | d. | adaptive radiation | e. | coevolution |
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31.
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The evolution of species B, C, D, E, and F from A looks like an example
of 
a. | adaptive radiation | c. | convergent evolution | b. | parallel evolution | d. | polyploid
speciation |
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32.
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A group of organisms that are behaviorally and morphologically (shape) similar,
share a common gene pool, and inhabit a specified small, local geographic area is called a
a. | deme | b. | family | c. | species
| d. | population | e. | community |
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33.
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Suppose a characteristic of a species varies gradually from one end of the
species range to the other. This would be a example of
a. | polymorphism | b. | polyploidy | c. | genetic
drift | d. | a cline | e. | a deme |
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34.
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Phylogeny is the study of
a. | fossils | b. | the names of organisms | c. | extinctions,
speciations, and evolutionary history | d. | reproductive isolating
mechanisms | e. | convergent evolution |
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35.
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Two species are not closely related, yet they are superficially similar in
structure. This probably results from
a. | convergent evolution | b. | parallel evolution | c. | divergent
evolution | d. | adaptive radiation | e. | character
displacement |
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36.
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Two species of narrowmouth toads (genus Gastrophryne) live in the southern and
central United States. Their ranges are largely allopatric, but do partly overlap. Mating
call s of the two species are different and are the main method for species recognition. When
biologists examined recordings of their vocalizations, they discovered that the differences between
the mating calls of the two species are more pronounced in the region of overlap, when compared to
those animals fro regions of allopatry. This general phenomenon is called
a. | sibling species | b. | subspecies (or races) | c. | character
displacement | d. | sympatric speciation |
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37.
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The legs of lizard and the legs of a cockroach are
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38.
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When bacteria are placed on a medium containing an antibiotic, most will
die. A few, however, may survive and grow to form antibiotic resistance colonies. How do
these colonies arise.
a. | the antibiotic causes a mutation to occur that allows the bacteria to destroy the
antibiotic | b. | A few bacteria are resistant to the antibiotic before it is
administered | c. | A few bacteria develop immunity by producing antibodies that destroy
antibiotics. | d. | Bacteria evolve more rapidly than eukaryotes because they use a Lamarkian rather than
a Darwinian system. |
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39.
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An individual’s fitness is determined by its
a. | ability to compete for limited resources | b. | resistance to
diseases | c. | ability to escape predators and avoid parasites | d. | physical strength
and hardiness | e. | success in contributing genes to future generations |
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40.
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If two poisonous or distasteful sympatric populations develop similar coloration
and morphology by convergent evolution, it is called
a. | adaptive radiation | b. | speciation | c. | a Batesian
mimic | d. | a Mullerian mimic | e. | character
displacement |
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