Download There is no scantron with the webpage version of the THQ. Mark

There is no scantron
with the webpage
version of the THQ.
Mark your answers
directly on this paper.
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THQ #17 EVOLUTION OF POPULATION
Read the Chapter FIRST, then answer the questions
17-1
17-2
One end of Figure 17–1 shows an increase in average beak size for a population of
birds. When individuals at only one end of a bell curve of phenotype
frequencies have high fitness, the result is
a. directional selection.
b. stabilizing selection.
c. disruptive selection
d. genetic drift
Figure 17–2 shows highest fitness toward the center of the curve. When individuals
with an average form of a trait have the highest fitness, the result is
a. not predictable.
b. disruptive selection.
c. directional selection
d. stabilizing selection
Natural selection acts directly on
a. alleles.
b. genes.
c. phenotypes.
d. mutations.
In organisms that reproduce sexually, most variation that can be inherited is due to
a. mutations during gamete formation
b. polygenic traits
c. gene recombination during sexual reproduction
d. the effects of radiation.
A factor that is necessary for the formation of a new species is
a. reproduction at different times. c. different mating behaviors.
b. geographic barriers.
d. reproductive isolation.
What situation might develop in a population having some plants whose flowers open at
midday and other plants whose flowers open late in the day?
a. behavioral isolation
c. temporal isolation
b. geographic isolation
d. genetic drift
Which population has a genetic tie to the common ancestor?
A. A B. B C. C D. all of the are related
What type of mutation has occurred in all the populations?
A. Deletion B. Frameshift C. Substitution D. Insertion
Muations can be
A. Beneficial
B. Harmful
C. Neutral
All of the above
If the sequence of bases in Populations A,B and C are different ,then most likely the
proteins that DNA codes for are ….
A. identical B. different
THQ #19 HISTORY OF LIFE
Read the Chapter FIRST, then answer the questions
There is no scantron
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version of the THQ.
Mark your answers
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The fossil record shows
a. that most organisms that ever lived on Earth are now extinct.
b. that only bones and teeth can become fossilized.
c. that fossils formed under many different conditions.
d. a complete record of every organism that ever existed on Earth.
To be useful as an index fossil, a species must have existed for a
a. long period of time over a wide geographic range.
b. long period of time over a small geographic range.
c. short period of time over a wide geographic range.
d. short period of time over a small geographic range.
How would you date a sample of rock that you suspect as being one of the earliest on Earth?
a. Use a radioactive isotope with a short half-life.
b. Use a radioactive isotope with a long half-life.
c. Use an index fossil.
d. Use a microfossil.
Fossilized evidence of Earth’s first forms of life would consist of
a. vertebrates from the Precambrian.
b. invertebrates from the Precambrian.
c. eukaryotes from the Precambrian.
d. prokaryotes from the Precambrian.
Paleontologists identify a new species of fossil on two different continents. What geological
process would most likely responsible for this fossil being found in both
places?
a. mountain building
b. continental drift
c. volcanic eruption
d. ocean and wind currents
The Australian flying phalanger is a marsupial flying squirrel. Its appearance, behavior,
environment, and diet closely resemble those of the American flying squirrel,
a placental mammal. This resemblance is most likely due to
a. adaptive radiation.
c. coevolution.
b. convergent evolution.
d. gradualism.
A species at equilibrium migrates into a new environment and soon begins a period of rapid
evolution. The type of evolution that occurred is most likely
a. adaptive radiation.
c. coevolution.
b. genetic mutation.
d. convergent evolution.
Fossils of the coelocanth, a primitive fish, date back about 140 million years. Modern
coelacanths are virtually identical to their fossil ancestors. This species most
likely evolves through the process of
a. gradualism.
c. coevolution.
b. convergent evolution.
d. punctuated equilibrium.
The endosymbiotic theory proposes that eukaryotic cells arose from
a. individual prokaryotic cells.
c. communities formed by prokaryotes.
b. multicellular prokaryotes.
d. communities formed by eukaryotes.
Sexual reproduction contributes to genetic diversity by allowing
a. a single parent to pass along a complete set of unmixed genes to offspring.
b. unmixed genes from two parents to be passed to offspring.
c. genes from two parents to be mixed and remixed before being passed to
offspring.
d. genes from a single parent to be mixed and remixed before being passed to
offspring.