1. |
Mutations
can result from: |
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a) |
certain types of drugs and radiation. |
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b) |
mistakes in the replication of DNA. |
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c) |
neither a nor b. |
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d) |
both a and b. |
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2. |
The ultimate source of all new genetic variation is:
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a) |
mutation. |
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b) |
genetic drift. |
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c) |
speciation. |
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d) |
mitosis. |
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e) |
all of the above. |
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3. |
Evolutionary change can occur: |
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a) |
through random genetic drift. |
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b) |
when a population is not in Hardy-Weinberg
equilibrium. |
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c) |
when mutation occurs. |
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d) |
a and c. |
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4. |
The best definition for biological evolution would be:
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a) |
change in gene frequencies because
of mutation. |
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b) |
change in gene frequencies because
of random drift. |
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c) |
change in gene frequencies from one
generation to another. |
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d) |
none of the above. |
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5. |
A
state of genetic equilibrium requires: |
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a) |
few mutations. |
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b) |
random mating. |
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c) |
endogamyl. |
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d) |
low mortality. |
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6. |
The
frequency of a dominant allele is 0.6. What is the frequency of its recessive
allele? |
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a) |
0.3 |
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b) |
1 |
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c) |
0.4 |
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d) |
0.12 |
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7. |
New mutations are likely: |
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a) |
to produce new species. |
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b) |
to be deleterious. |
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c) |
to have no effect on a population. |
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d) |
none of the above. |
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8. |
Migration is: |
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a) |
an example of natural selection. |
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b) |
evidence for punctuated equilibrium. |
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c) |
a move to a new area, spanning a long
duration of time. |
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d) |
a move to a new area, then rapid return
to the original area. |
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9. |
Genetic
drift causes isolated populations to be: |
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a) |
more alike. |
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b) |
genetically stable. |
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c) |
genetically distinct from each other. |
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d) |
in Hardy-Weinberg equilibrium. |
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10. |
Mate guarding in soapberry bugs: |
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a) |
functions to stop the female from
moving. |
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b) |
helps stop other males from mating
with the female. |
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c) |
protects the female from predation. |
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d) |
all of the above. |
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11. |
All modern breeds of dogs originally come from the wild wolf.
This is due to: |
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a) |
hidden variation. |
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b) |
founder effect. |
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c) |
migration. |
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d) |
none of the above. |
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12. |
A correct assessment of the modern synthesis would be: |
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a) |
the integration of Darwinism and genetics. |
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b) |
the integration of anthropology with
genetics. |
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c) |
the integration of Mendel and anthropology. |
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d) |
the integration of genetics and field
observations. |
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13. |
____________
increases genetic variation. |
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a) |
selection. |
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b) |
mutation. |
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c) |
a and b. |
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d) |
neither a nor b. |
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14. |
Male
soapberry bugs will guard female bugs more when: |
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a) |
females are relatively scarce. |
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b) |
there are few males. |
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c) |
there are more males than females. |
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d) |
females are in danger of predation. |
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15. |
Behavioral plasticity occurs most often when: |
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a) |
environments are very stable. |
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b) |
environments are variable. |
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c) |
behavior is learned. |
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d) |
behavior has recently changed. |
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16. |
An exterminator wipes out an entire population of ants. This
is an example of: |
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a) |
natural selection. |
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b) |
the exterminator being selective pressure. |
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c) |
both a and b. |
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d) |
none of the above. |
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17. |
If gene _A_ has a frequency of 0.70 and gene _a_ is at 0.30,
what is the frequency of the heterozygote?: |
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a) |
.04 |
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b) |
1 |
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c) |
0.42 |
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d) |
none of the above |
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18. |
In a population in Hardy-Weinberg equilibrium, the allele frequency:
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a) |
changes at a constant rate. |
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b) |
changes toward homozygosity. |
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c) |
remains constant. |
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d) |
changes slowly. |
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19. |
Hardy-Weinberg equilibrium requires a set of ideal conditions
that include: |
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a) |
mutation. |
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b) |
genetic drift. |
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c) |
nonrandom mating. |
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d) |
all of the above. |
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20. |
Mutations will happen: |
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a) |
because of gene blendings. |
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b) |
randomly. |
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c) |
to weed out the unfit in a given population. |
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d) |
to keep overpopulation from becoming
a problem. |
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21. |
The is the largest natural reproductive population. |
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22. |
_2pq_ in the Hardy-Weinberg equation refers to .
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23. |
Genetic drift is most significant for populations
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24. |
Evolution typically results from a change in frequencies. |
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25. |
A population is in Hardy-Weinberg equilibrium when the answer
to the formula equals . |
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