BIOL 1001 LSU FINAL EXAM -REAL EXAM- QUESTIONS WITH ALL CORRECT ANSWERS GRADED A+
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BIOL 1001 LSU
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BIOL 1001 LSU
BIOL 1001 LSU FINAL EXAM -REAL EXAM- QUESTIONS WITH ALL CORRECT ANSWERS GRADED A+
What would you expect the most common circumference(s) to be after 10 generations of
directional selection?
a. 2 cm
b. Greater than 2 cm OR less than 2 cm
c. Greater than 2 cm AND less than 2 cm
d. Only greater...
BIOL 1001 LSU FINAL EXAM -REAL
EXAM- QUESTIONS WITH ALL
CORRECT ANSWERS GRADED A+
What would you expect the most common circumference(s) to be after 10 generations
of
directional selection?
a. 2 cm
b. Greater than 2 cm OR less than 2 cm
c. Greater than 2 cm AND less than 2 cm
d. Only greater than 2 cm - Answer-b. Greater than 2 cm OR less than 2 cm
What would you expect the most common circumference(s) to be after 10 generations
of
disruptive selection?
a. 2 cm
b. Greater than 2 cm or less than 2 cm
c. Greater than 2 cm and less than 2 cm
d. Only greater than 2 cm - Answer-c. Greater than 2 cm AND less than 2 cm
Which statement best describes the evolution of pesticide resistance in a population of
insects?
a. Individual members of the population slowly adapt to the presence of the
chemical by striving to meet the new challenge.
b. All insects exposed to the insecticide begin to use a formerly silent gene to make a
new enzyme that breaks down the insecticide molecules.
c. Insects observe the behavior of other insects that survive pesticide application and
adjust their own behaviors to copy those of the survivors
d. Offspring of insects that are genetically resistant to the pesticide become more
abundant as the susceptible insects die off - Answer-d. Offspring of insects that are
genetically resistant to the pesticide become more abundant as the susceptible insects
die off
Why is nonrandom mating important for a population being in equilibrium?
a. So that there is an equal distribution of males and females
b. So that all the species will have similar characteristics to each other
c. If certain genotypes favored mating with specific other genotypes, this would alter
the genome of the population
d. All of the above - Answer-c. If certain genotypes favored mating with specific other
genotypes, this would alter the genome of the population
What has occured to make separate species have similar internal structures
, a. Convergent evolution
b. Divergent evolution
c. Natural selection
d. Artificial selection - Answer-a. Convergent evolution
An antibiotic is given repeatedly to treat a recurrent ear infection. It worked initially but
now is no longer effective. This indicates that the Streptococcus bacterium
a. is very sensitive to the antibiotic
b. is infectious only if it is sensitive to the antibiotic
c. is being treated with an antibiotic that has experienced a manufacturing error,
making it infective.
d. experienced natural selection that has allowed the resistant Streptococcus to
survive and multiply - Answer-d. experienced natural selection that has allowed the
resistant Streptococcus to survive and multiply
Which statement about natural selection is most correct?
a. Adaptations beneficial in one habitat should generally be beneficial in all other
habitats as well
b. Different species that occupy the same habitat will adapt to that habitat by
undergoing the same genetic changes
c. Adaptations beneficial at one time should generally be beneficial during all other
times as well
d. Well-adapted individuals leave more offspring, and thus contribute more to the
next generation's gene pool - Answer-d. Well-adapted individuals leave more offspring,
and thus contribute more to the next generation's gene pool
Newts of the genus Taricha are poisonous, deterring their predators from eating them.
The common garter snake, a predator, has evolved a resistance to the newt toxins. This
situation is an example of _____.
a. competition
b. natural selection
c. sexual selection
d. Coevolution - Answer-d. Co-evolution
Seemingly dissimilar organisms such as hummingbirds, humans, and whales have
similar
skeletal structures. The most directly suggested that
a. Dissimilar organisms might have evolved from a distant, common ancestor
b. Advantageous changes can be passed along to offspring
c. Only the best-adapted organisms can survive
d. Most evolution occurs rapidly following a mass extinction
e. All of the listed responses are correct - Answer-a. Dissimilar organisms might have
evolved from a distant, common ancestor
Why is inbreeding so dangerous?
a. It decreases the genetic similarity within a population
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