Evolution Practice Test
Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
____ 1. Lamarck's contribution to the theory of evolution was the concept of
|
a. |
natural selection. |
|
b. |
catastrophism. |
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c. |
inheritance of acquired characteristics. |
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d. |
mutation. |
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e. |
geographic distribution of organisms. |
____ 2. Of the following, which does NOT characterize a population in Hardy-Weinberg equilibrium?
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a. |
large population size |
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b. |
no mutation |
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c. |
differential reproduction |
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d. |
absence of gene flow |
____ 3. The maintenance of Hardy-Weinberg equilibrium is encouraged
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a. |
when sexual selection occurs. |
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b. |
when mutations occur. |
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c. |
in small populations. |
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d. |
when there is no gene flow between different populations. |
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e. |
all of these |
____ 4. Directional selection occurs when
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a. |
the environment controls which organisms will survive. |
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b. |
humans determine which organisms will survive. |
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c. |
the extremes of the population have a lesser chance to survive. |
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d. |
the extremes of the population have a better chance to survive. |
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e. |
the organisms on one extreme of the population have a better chance to survive than those on the other extreme. |
____ 5. When a population goes through a bottleneck,
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a. |
genetic drift is likely to occur. |
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b. |
mutation rates increase. |
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c. |
extinction rates decrease. |
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d. |
natural selection decreases in intensity. |
____ 6. The greatest contributor(s) to allopatric isolation is (are)
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a. |
geographical barriers. |
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b. |
differences in reproductive timing. |
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c. |
gametic incompatibility. |
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d. |
hybrid inviability. |
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e. |
behavioral peculiarities. |
____ 7. The gradual model of evolutionary change proposes that most morphological change occurs
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a. |
gradually but without development of new species. |
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b. |
rapidly but without speciation. |
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c. |
gradually during speciation. |
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d. |
rapidly leading to new species. |
____ 8. If the frequency of a recessive gene in a population under genetic equilibrium is 40 percent, in the next generation the frequency of that gene would be
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a. |
20 percent. |
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b. |
40 percent. |
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c. |
80 percent. |
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d. |
dependent upon other factors, so it cannot be predicted but must instead be reevaluated each generation. |
____ 9.. If the frequency of the recessive allele is 30 percent, the frequency of the heterozygous carrier would be what percent?
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a. |
42 |
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b. |
9 |
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c. |
27 |
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d. |
60 |
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e. |
80 |
____ 10. Suppose that you have a population of guinea pigs in which two-thirds of the alleles for coat color specify black and one-third specify white. According to the Hardy-Weinberg rule, what will be the ratio of these alleles in the gene pool in future generations, provided all the guinea pigs reproduce?
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a. |
1:1 |
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b. |
2:1 |
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c. |
3:1 |
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d. |
.67:.11 |
11. Four of the five answers below are consistent with Darwin's theory of natural selection. Select the exception.
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a. |
All populations tend to overproduce. |
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b. |
Some members are more adapted to the rigors of competition. |
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c. |
Limited resources put limits on population growth. |
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d. |
Variation in individuals is not inheritable. |
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e. |
Traits appear and disappear. |
Evolution Practice Test
Answer Section
MULTIPLE CHOICE
1. ANS: C
2. ANS: C
3. ANS: D
4. ANS: E
5. ANS: A
6. ANS: A
7. ANS: C
8. ANS: B
9. ANS: A
10. ANS: B
11. ANS: D