BIOL 1001 WEEK 5 EXAM WITH ANSWERS
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Question 1
2 out of 2 points
Your friend was diagnosed with strep throat 2 months ago. She was treated with
antibiotics for 10 days, but 2 weeks after treatment, the symptoms returned. She was
given a different antibiotic, and her symptoms again initially improved but then got
worse. What is happening? Choose the best answer.
Correct a.
Answer:
Your friend was originally infected with bacteria that are resistant to at
least two antibiotics.
Question 2
3 out of 3 points
The phrase “survival of the fittest” is somewhat misleading because it
implies that:
Correct b.
Answer:
The best possible organism
will evolve
Question 3
2 out of 2 points
Which individuals have the greatest fitness in an area where malaria is
common?
Correct e.
Answer:
Individuals heterozygous for the normal and sickle cell
anemia alleles
Question 4
2 out of 2 points
, A biologist has been studying two populations of trout in Montana for the
last 25 years, when the two populations were established from one
common population. In the southern population, the fish now have a
slightly different mouth shape. But the northern population hasn’t changed
from the original type. The new shape works well in catching the type of
prey common in the habitat of the southern population. Which explanation
is the most likely explanation of the gene differences in the two
populations?
Correct d.
Answer:
The gene that produces the variation is probably still present in a small
percentage of the northern population, but since there’s no advantage to
having it, individuals with the variation aren’t preferentially selected.
Question 5
3 out of 3 points
Which of the following is not a way in which the theory of evolution has been supported?
Correct e.
Answer:
None of the
above.
Question 6
2 out of 2 points
You notice that some squirrels in your neighborhood have a much darker coat color than
most of the other squirrels. Is this darker color an adaptation?
Correct b.
Answer:
The trait is only an adaptation if it gives the squirrels an
advantage in their habitat.
Question 7
2 out of 2 points
What is an allele?
Correct c.
Answer:
A particular version of
false
Question 1
2 out of 2 points
Your friend was diagnosed with strep throat 2 months ago. She was treated with
antibiotics for 10 days, but 2 weeks after treatment, the symptoms returned. She was
given a different antibiotic, and her symptoms again initially improved but then got
worse. What is happening? Choose the best answer.
Correct a.
Answer:
Your friend was originally infected with bacteria that are resistant to at
least two antibiotics.
Question 2
3 out of 3 points
The phrase “survival of the fittest” is somewhat misleading because it
implies that:
Correct b.
Answer:
The best possible organism
will evolve
Question 3
2 out of 2 points
Which individuals have the greatest fitness in an area where malaria is
common?
Correct e.
Answer:
Individuals heterozygous for the normal and sickle cell
anemia alleles
Question 4
2 out of 2 points
, A biologist has been studying two populations of trout in Montana for the
last 25 years, when the two populations were established from one
common population. In the southern population, the fish now have a
slightly different mouth shape. But the northern population hasn’t changed
from the original type. The new shape works well in catching the type of
prey common in the habitat of the southern population. Which explanation
is the most likely explanation of the gene differences in the two
populations?
Correct d.
Answer:
The gene that produces the variation is probably still present in a small
percentage of the northern population, but since there’s no advantage to
having it, individuals with the variation aren’t preferentially selected.
Question 5
3 out of 3 points
Which of the following is not a way in which the theory of evolution has been supported?
Correct e.
Answer:
None of the
above.
Question 6
2 out of 2 points
You notice that some squirrels in your neighborhood have a much darker coat color than
most of the other squirrels. Is this darker color an adaptation?
Correct b.
Answer:
The trait is only an adaptation if it gives the squirrels an
advantage in their habitat.
Question 7
2 out of 2 points
What is an allele?
Correct c.
Answer:
A particular version of
